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| United States Patent |
6,012,297
|
|
Ichishi
, et al.
|
January 11, 2000
|
Vehicle air conditioning apparatus
Abstract
A vehicle air conditioning apparatus in which the larger the air
conditioning cooling load in a vehicle compartment, for example, the
larger the solar radiation amount, the lower the set temperature or the
larger the temperature deviation between set temperature and inner air
temperature, the narrower the swing ranges of swing louvers of respective
center and side FACE blow outlets are set. Regardless of the swing range
of the swing louvers, swing cycles of the swing louvers are set constant,
and the narrower the swing ranges of the swing louvers, the slower the
swing speeds of the swing louvers are set. Therefore, annoying feeling is
reduced, and comfortable feeling for passengers is significantly improved.
| Inventors:
|
Ichishi; Yoshinori (Kariya, JP);
Samukawa; Katsuhiko (Obu, JP);
Kawai; Takayoshi (Hoi-gun, JP);
Kajino; Yuichi (Nagoya, JP);
Ito; Yuji (Okazaki, JP)
|
| Assignee:
|
Denso Corporation (Kariya, JP)
|
| Appl. No.:
|
130049 |
| Filed:
|
August 6, 1998 |
Foreign Application Priority Data
| Aug 08, 1997[JP] | 9-214571 |
| Feb 25, 1998[JP] | 10-044104 |
| Apr 27, 1998[JP] | 10-116861 |
| Jun 26, 1998[JP] | 10-180300 |
| Current U.S. Class: |
62/179; 62/186; 62/408; 165/203; 236/49.3 |
| Intern'l Class: |
F25D 017/00 |
| Field of Search: |
62/186,408,178,179,244
236/49.3,51,91 C
165/202,203,204
|
References Cited
U.S. Patent Documents
| 4671458 | Jun., 1987 | Fukuda et al. | 236/49.
|
| 4738116 | Apr., 1988 | Himeno et al. | 62/186.
|
| 4875624 | Oct., 1989 | Hara et al. | 236/49.
|
| 4919328 | Apr., 1990 | Hara et al. | 236/49.
|
| 4949624 | Aug., 1990 | Hara et al. | 98/2.
|
| 4978061 | Dec., 1990 | Ogihara et al. | 236/49.
|
| 5186387 | Feb., 1993 | Doi et al. | 236/49.
|
| 5331825 | Jul., 1994 | Kim | 62/180.
|
| 5860593 | Jan., 1999 | Heinle et al. | 236/91.
|
| Foreign Patent Documents |
| 57-15008 | Jan., 1982 | JP.
| |
| Y2-4-2086 | Jan., 1992 | JP.
| |
| B2-7-102775 | Nov., 1995 | JP.
| |
Primary Examiner: Bennett; Henry
Assistant Examiner: Norman; Marc
Attorney, Agent or Firm: Harness, Dickey & Pierce, PLC
Parent Case Text
CROSS REFERENCE TO RELATED APPLICATIONS
This application is based upon and claims priority from Japanese patent
application Nos. Hei 9-214571, filed Aug. 8, 1997, and Hei 10-44104, filed
Feb. 25, 1998, and Hei 10-116861, filed Apr. 27, 1998, and Hei 10-180300,
filed Jun. 26, 1998, the entire contents of which are incorporated herein
by reference.
Claims
What is claimed is:
1. An air conditioning apparatus for a vehicle having an air conditioning
zone in the vehicle, comprising:
an air conditioning unit having an air outlet for controlling an
air-conditioned air to blow toward the air conditioning zone;
blow condition changing means for changing at least one of blow condition
including a blow range, blow position, blow angle, blow zone and blown air
amount of said air-conditioned air, said blow condition changing means
being mounted between said air outlet and the air conditioning zone;
an actuator for swinging said blow condition changing means;
cooling load detecting means for detecting a cooling load in the vehicle;
swing range setting means for setting a swing range of said blow condition
changing means according to said cooling load detected by said cooling
load detecting means; and
blow condition control means for controlling said actuator to reduce a
swing speed of said blow condition changing means in proportion to a
reduction of said swing range set by said swing range setting means.
2. An air conditioning apparatus according to claim 1, wherein said swing
speed of said blow condition control means is reduced by prolonging a
stopping period or a slowed swing period of said blow condition changing
means.
3. An air conditioning apparatus according to claim 1, wherein:
said swing range setting means reduces said swing range in proportion to an
increase of said cooling load detected by said cooling load detecting
means; and
said swing range setting means increases said swing range in proportion to
a decrease of said cooling load detected by said cooling load detecting
means.
4. An air conditioning apparatus according to claim 3, wherein:
said cooling load to be detected by said cooling load detecting means
includes at least one of a blown air amount at an upper portion of said
air outlet, a blower capacity, an applied voltage to a blower motor, an
internal temperature of the vehicle, a temperature difference between a
predetermined temperature and said internal temperature of the vehicle, a
solar radiation amount, a solar radiation direction, vehicle speed, an
internal humidity of the vehicle, an external temperature, a temperature
of an air after passing through an evaporator, a blown air temperature, a
seat temperature, a steering wheel temperature, and a skin temperature.
5. An air conditioning apparatus according to claim 1, wherein:
the air conditioning zone includes a first air conditioning zone and a
second air conditioning zone;
said air conditioning unit controls a temperature of said first air
conditioning zone and said second air conditioning zone individually;
said blow condition changing means includes a first blow condition changing
means mounted between said air outlet and said first air conditioning
zone, and includes a second blow condition changing means mounted between
said outlet and said second air conditioning zone; and
said swing range setting means sets a first swing range of said first blow
condition changing means according to a first cooling load of said first
air conditioning zone, and sets a second swing range of said second blow
condition changing means according to a second cooling load of said second
air conditioning zone individually.
6. An air conditioning apparatus according to claim 5, wherein:
said cooling load detecting means includes a solar radiation amount
detecting means for detecting whether one of said first and second air
conditioning zones is receiving a solar radiation; and
said swing range setting means reduces one of said first swing range and
said second swing range corresponding to said one of said first and second
air conditioning zones receiving said solar radiation.
7. An air conditioning apparatus according to claim 5, wherein:
said cooling load detecting means includes solar radiation amount detecting
means for detecting whether a crew is receiving a solar radiation; and
said swing range setting means reduces one of said first swing range and
said second swing range corresponding to said crew receiving said solar
radiation.
8. An air conditioning apparatus according to claim 5, wherein said swing
range setting means increases one of said first swing range and said
second swing range corresponding to one of said first and second blow
condition changing means which is closer to a steering wheel of the
vehicle.
9. An air conditioning apparatus according to claim 1, wherein:
said cooling load detecting means includes solar radiation direction
detecting means for detecting a solar radiation direction; and
said swing range setting means reduces said swing range in proportion to an
increase of an angle formed between a front direction of the vehicle and
said solar radiation direction detected by said solar radiation direction
detecting means.
10. An air conditioning apparatus according to claim 1, wherein:
said air conditioning apparatus has at least two of said blow condition
changing means; and
said swing range setting means reduces said swing range in proportion to a
decrease of a number of said blow condition changing means which is in
operation.
11. An air conditioning apparatus for a vehicle having a right side air
conditioning zone and a left side air conditioning zone in the vehicle,
comprising:
an air conditioning unit having a right side air outlet for blowing an
air-conditioned air toward the right side air conditioning zone and a left
side air outlet for blowing said air-conditioned air toward the left side
air conditioning zone, said air conditioning unit being for controlling a
temperature of said right side air conditioning zone and said left side
air conditioning zone individually;
right side blow condition changing means for changing at least one of blow
condition including a blow range, blow position, blow direction, blow
angle, and blow zone of said air-conditioned air blown from said right
side air outlet, at least in a horizontal direction;
left side blow condition changing means for changing at least one of blow
condition including a blow range, blow position, blow direction, blow
angle, and blow zone of said air-conditioned air blown from said left side
air outlet, at least in a horizontal direction;
a right side actuator for swinging said right side blow condition changing
means;
a left side actuator for swinging said left side blow condition changing
means;
cooling load detecting means for detecting a cooling load in the vehicle;
swing range setting means for setting a right side swing range of said
right side blow condition changing means and a left side swing range of
said left side blow condition changing means individually according to
said cooling load detected by said cooling load detecting means;
swing cycle setting means for setting a right side swing cycle of said
right side blow condition changing means and a left side swing cycle of
said left side blow condition changing means equal to one another;
blow condition control means for controlling said right side actuator and
said left side actuator according to said right and left swing ranges and
said right and left side swing cycles, respectively in such a manner that
swing directions of said right side blow condition changing means and said
left side blow condition changing means are opposite.
12. An air conditioning apparatus according to claim 11, wherein said blow
condition control means has a synchronizing means for synchronizing a
first timing when said right side blow condition changing means reaches
its left swing end with a second timing when said left side blow condition
changing means reaches its right swing end.
13. An air conditioning apparatus according to claim 11, wherein:
said air conditioning unit further includes a center outlet mounted between
said right side air outlet and said left side air outlet for blowing said
air-conditioned air;
said air conditioning apparatus further includes center blow condition
changing means for changing at least one of said blow condition of said
air-conditioned air blown from said center outlet; and
said swing range setting means further sets a center swing range of said
center blow condition changing means independently of said right and left
side swing ranges when said cooling load detected by said cooling load
detecting means at a right side of a crew is different from said cooling
load detected by said cooling load detecting means at a left side of said
crew.
14. An air conditioning apparatus according to claim 13, wherein said swing
range setting means increases one of said right side, left side and center
swing ranges corresponding to one of said right side, left side and center
blow condition changing means which is closest to a steering wheel of the
vehicle.
15. An air conditioning apparatus according to claim 11, wherein:
said cooling load to be detected by said cooling load detecting means
includes at least one of a blown air amount at an upper portion of said
air outlet, a blower capacity, an applied voltage to a blower motor, an
internal temperature of the vehicle, a temperature difference between a
predetermined temperature and said internal temperature of the vehicle, a
solar radiation amount, a solar radiation direction, vehicle speed, an
internal humidity of the vehicle, an external temperature, a temperature
of an air after passing through an evaporator, a blown air temperature, a
seat temperature, a steering wheel temperature, and a skin temperature.
16. An air conditioning apparatus according to claim 11, wherein:
said cooling load detecting means includes solar radiation amount detecting
means for detecting whether one of said right side and left side air
conditioning zones is receiving a solar radiation; and
said swing range setting means reduces one of said right side and left side
swing ranges corresponding to said one of said right side and left side
air conditioning zones receiving said solar radiation.
17. An air conditioning apparatus according to claim 11, wherein:
said cooling load detecting means includes a solar radiation amount
detecting means for detecting whether a crew is receiving a solar
radiation; and
said swing range setting means reduces one of said right side swing range
and said left side swing range corresponding to said crew receiving said
solar radiation.
18. An air conditioning apparatus according to claim 11, wherein:
said air conditioning apparatus has at least two of said blow condition
changing means; and
said swing range setting means reduces said swing range in proportion to a
decrease of a number of said blow condition changing means which is in
operation.
19. An air conditioning apparatus for a vehicle having an air conditioning
zone in the vehicle, comprising:
an air conditioning unit having an air outlet for controlling an
air-conditioned air to blow toward the air conditioning zone;
blow condition changing means for changing at least one of blow condition
including a blow range, blow position, blow angle, blow zone and blown air
amount of said air-conditioned air, said blow condition changing means
being mounted between said air outlet and the air conditioning zone;
an actuator for swinging said blow condition changing means;
cooling load detecting means for detecting a cooling load in the vehicle;
swing range setting means for setting a swing range of said blow condition
changing means according to said cooling load detected by said cooling
load detecting means;
swing range limiting means for limiting said swing range; and
blow condition control means for controlling said actuator in such a manner
that a swing cycle of said blow condition changing means is kept constant
when said swing range is limited by said swing range limiting means.
20. An air conditioning apparatus according to claim 19, wherein said blow
condition control means adjusts a swing speed of said blow condition
changing means at a point adjacent to said limited swing range.
21. An air conditioning apparatus according to claim 19, wherein said blow
condition control means controls said actuator to expand said swing range
to an opposite side to said limited swing range.
22. An air conditioning apparatus according to claim 19, wherein:
said swing range setting means reduces said swing range in proportion to an
increase of said cooling load detected by said cooling load detecting
means; and
said swing range setting means increases said swing range in proportion to
a decrease of said cooling load detected by said cooling load detecting
means.
23. An air conditioning apparatus for a vehicle having a front side air
conditioning zone and a rear side air conditioning zone in the vehicle,
comprising:
an air conditioning unit having an air outlet installed in the front side
air conditioning zone for controlling an air-conditioned air to blow
toward the front side and rear side air conditioning zones;
blow condition changing means for changing at least one of blow condition
including a blow range, blow position, blow angle, blow zone and blown air
amount of said air-conditioned air, said blow condition changing means
being mounted between said air outlet and the front side air conditioning
zone;
an actuator for swinging said blow condition changing means;
cooling load detecting means for detecting a cooling load in the vehicle;
swing range setting means for setting a swing range of said blow condition
changing means according to said cooling load detected by said cooling
load detecting means such that said swing range of said blow condition
changing means is increased in proportion to a decrease of said cooling
load detected by said cooling load detecting means; and
blow condition control means for controlling said actuator to expand said
swing range such that a blown air amount to said rear side air
conditioning zone is increased.
24. An air conditioning apparatus according to claim 23, wherein:
said cooling load detecting means includes solar radiation direction
detecting means for detecting a solar radiation direction; and
said swing range setting means reduces said swing range in proportion to an
increase of an angle formed between a front direction of the vehicle and
said solar radiation direction detected by said solar radiation direction
detecting means.
25. An air conditioning apparatus for a vehicle having a right side air
conditioning zone and a left side air conditioning zone in the vehicle,
comprising:
an air conditioning unit having a right side air outlet for blowing an
air-conditioned air toward the right side air conditioning zone and a left
side air outlet for blowing said air-conditioned air toward the left side
air conditioning zone, said air conditioning unit being for controlling a
temperature of said right side air conditioning zone and said left side
air conditioning zone individually;
right side blow condition changing means for changing at least one of blow
condition including a blow range, blow position, blow direction, blow
angle, and blow zone of said air-conditioned air blown from said right
side air outlet, at least in a horizontal direction;
left side blow condition changing means for changing at least one of blow
condition including a blow range, blow position, blow direction, blow
angle, and blow zone of said air-conditioned air blown from said left side
air outlet, at least in a horizontal direction;
a right side actuator for swinging said right side blow condition changing
means;
a left side actuator for swinging said left side blow condition changing
means;
a solar radiation amount detecting means for detecting a solar radiation
amount and a solar radiation direction of the vehicle;
swing range setting means for setting a right side swing range of said
right side blow condition changing means and a left side swing range of
said left side blow condition changing means individually according to
said solar radiation amount detected by said solar radiation amount
detecting means, and for adjusting said right side swing range and said
left side swing range individually according to said solar radiation
direction detected by said solar radiation amount detecting means; and
blow condition control means for controlling said right side actuator and
said left side actuator according to said right side and left side swing
ranges adjusted by said swing range setting means.
26. An air conditioning apparatus for a vehicle having an air conditioning
zone in the vehicle, comprising:
an air conditioning unit having an air outlet for controlling an
air-conditioned air to blow toward the air conditioning zone;
blow condition changing means for changing at least one of blow condition
including a blow range, blow position, blow angle, blow zone and blown air
amount of said air-conditioned air, said blow condition changing means
being mounted between said air outlet and the air conditioning zone;
an actuator for swinging said blow condition changing means;
cooling load detecting means for detecting a cooling load in the vehicle;
swing range setting means for setting a swing range of said blow condition
changing means according to said cooling load detected by said cooling
load detecting means; and
blow condition control means for controlling said actuator to maintain a
swing cycle of said blow condition changing means constant.
27. An air conditioning apparatus according to claim 26, wherein:
said swing range setting means reduces said swing range in proportion to an
increase of said cooling load detected by said cooling load detecting
means; and
said swing range setting means increases said swing range in proportion to
a decrease of said cooling load detected by said cooling load detecting
means.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a vehicle air conditioning apparatus
capable of setting a swing range of a blow condition changing device such
as a swing louver or the like for changing a blow condition of a blow
range, a blow position, a blow direction, a blow angle, a blow region, the
blown air amount or the like of air conditioned blown air, to an optimum
swing range in accordance with an cooling load such as a solar radiation
amount, a solar radiation direction or the like.
2. Description of Related Art
One type of known vehicle air conditioning apparatus has a blow condition
changing device having a deflecting plate for changing a blow direction of
air conditioned blown air blown from a center face blow outlet as well as
a side face blow outlet.
Further, as a conventional technology, there has been disclosed a blow
condition changing device (first related art: for example, Japanese
Examined Patent Publication No. JP-B2-7-102775) in which when air
conditioning cooling load is temporarily increased by influence of a solar
radiation amount or the like, a swing range of a deflecting plate is
narrowed to concentrate a cooled wind in a certain area, and a swing cycle
of the deflecting plate is proportionally shortened such that the cooled
wind is blown as if it is fanned vehemently by a fan.
Further, as another conventional technology, there has been disclosed a
blow condition changing device (second related art: for example, Japanese
Examined Utility Model Publication No. JP-Y2-4-2086) in which solar
radiation direction signals from two solar radiation sensors provided on
left and right sides in a vehicle compartment and louver position signals
from position detecting switches for detecting left and right directions
of center louvers are inputted, and a swing speed of the center louver on
the side of presence of solar radiation is retarded than a swing speed of
the center louver on a side of absence of solar radiation in accordance
with a solar radiation direction.
However, according to the blow condition changing device of the first
related art, when the swing range of the deflecting plate is narrowed, the
swing cycle of the deflecting plate is shortened and accordingly, blow
directions of the cooled wind blown from the center face blow outlet and
the side face blow outlet are frequently changed. It may cause a problem
that such operation is annoying and unpleasant for a passenger in a
vehicle. Furthermore, according to the blow condition changing device of
the first prior art, regardless of the swing range of the deflecting
plate, the swing speed of the deflecting plate is maintained constant.
Therefore, the narrower the swing range of the deflecting plate, the more
vehemently the movement of the deflecting plate is changed, and
accordingly, it may cause a problem that the operation is annoying
depending on a reflecting light angle, and unpleasant feeling is brought
about to the passenger in the vehicle. Particularly, the operation is not
preferable to a high class vehicle which highly probably installs with a
wind direction changing device. Furthermore, when air conditioning cooling
load is high, the deflecting plate is vehemently reciprocated at a
predetermined location and the durability of a device for driving the
deflecting plate is lessened.
Further, when the swing range of the deflecting plated is widened in
accordance with lowering of air conditioning cooling load, in order to
provide an agreeable air distribution amount, swinging to as far as a
contiguous air conditioning zone becomes necessary, for example,
independent control performance between an air conditioning zone for the
driver seat side and an air conditioning zone for the passenger seat side
is lessened. Further, when the swing range of the deflecting plate is
widened, for example, uniformly in left and right direction centering on a
direction to front seat passengers, a lot of time is required to obtain
sufficient blown air amount for the rear seat passengers, and unpleasant
feeling is brought about to the rear seat passengers at an initial stage
of the air conditioning.
Meanwhile, according to the blow condition changing device of the second
prior art, the swing speed of the center louver is controlled in
accordance with the direction of the solar radiation which is incident on
the inside of the vehicle compartment. However, when the solar radiation
is incident on the passenger of the vehicle from a side of the vehicle,
the passenger of the vehicle feels hot and a comfortable feeling is
lessened if the air conditioned blown air is blown from the center louver
to the passenger of the vehicle.
SUMMARY OF THE INVENTION
The present invention is made in light of the foregoing problems, and it is
an object of the present invention to provide a vehicle air conditioning
apparatus capable of reducing an annoying feeling and preventing
passengers from uncomfortableness caused by the frequent change in the
blow direction of the air conditioned blown air blown from a blow outlet.
It is another object of the present invention to provide a vehicle air
conditioning apparatus capable of preventing the durability degradation of
an actuator of blow condition changing device.
Furthermore, it is another object of the present invention to provide a
vehicle air conditioning apparatus capable of maintaining an optimum blown
air amount which is calculated in accordance with the cooling load.
It is another object of the present invention to provide a vehicle air
conditioning apparatus capable of promoting a comfortable feeling of
passengers of a vehicle in a rear seat air conditioning zone even at an
initial stage of the air conditioning.
Furthermore, it is another object of the present invention to provide a
vehicle air conditioning apparatus capable of promoting a comfortable
feeling of passengers by canceling a cooling load difference between left
and right side cooling loads on the passenger bodies.
According to an aspect of the present invention, a swing range of a blow
condition changing device is set in accordance with a cooling load, and
the narrower the swing range, the slower a swing speed of the blow
condition changing member to stop or swing very slowly at an end of swing
or at a midway of the swing range. Therefore, even when the swing range of
the blow condition changing device is changed, the swing cycle of the blow
condition changing device remains constant, and accordingly, the narrower
the swing range of the blow condition changing member becomes, the slower
the swing speed is changed continuously or in steps. Thus, an annoying
feeling is reduced and an uncomfortable feeling of the passenger is
prevented.
When the cooling load is large and the swing range of the blow condition
changing member is narrowed, blow range, blow position, blow direction,
blow angle or blow region of air conditioned blown air blown from a blow
outlet is not frequently changed. Therefore, an annoying and an
uncomfortable feelings are reduced.
When the cooling load is small and the swing range of the blow condition
changing member is widened, blow range, blow position, blow direction,
blow angle or blow region of air conditioned blown air blown from a blow
outlet is continuously changed and the air conditioned blown air blown
from the blow outlet is blown over a wide range. Thus, a time period where
the air conditioned blown air is blown to passengers of a vehicle is
shortened, and the annoying and the uncomfortable feelings are reduced.
Further, as a cooling load detected by the cooling load detecting member,
either one or more of an blow wind amount from an upper blow outlet, a
blow wind amount of a blower, applied voltage on a blower motor,
temperature in a vehicle compartment, temperature deviation between set
temperature and temperature in a vehicle compartment, a solar radiation
amount, solar radiation direction, vehicle speed, humidity in a vehicle
compartment, temperature outside of a vehicle compartment, air temperature
immediately after passing through an evaporator, blow temperature, seat
temperature, steering wheel temperature and skin temperature can be
selected.
Furthermore, when a cooling load of a first air conditioning zone differs
from a cooling load of a second air conditioning zone, amounts of changing
swing ranges of blow condition changing member are made different from
each other at the first air conditioning zone and the second air
conditioning zone by which the air conditioning state in the first air
conditioning zone and the air conditioning state in the second air
conditioning zone can be set to optimum states, respectively. Accordingly,
even in the case where air conditioning feeling (for example,
refrigerating feeling) of a passenger of the vehicle in the first air
conditioning zone differs from air conditioning feeling (for example,
refrigerating feeling) of other passenger of the vehicle in the second air
conditioning zone, comfortable feeling of both of the passengers can be
ensured.
According to another aspect of the present invention, by narrowly setting a
swing range of blow condition changing member of an air conditioning zone
in the first air conditioning zone or the second air conditioning zone
where solar radiation is incident, or by narrowly setting the swing range
when the solar radiation direction gets closer from the front of the
vehicle toward the side of the vehicle, or by narrowly setting the swing
range when the solar radiation is incident on a passenger, air conditioned
blown air is intensively supplied on the body of the passenger. Therefore,
comfortable feeling of the passenger is significantly improved.
Furthermore, by widely setting a swing range of blow condition changing
member on a side proximate to a steering wheel, the hand or the arm
holding the steering wheel of a passenger of a vehicle can be prevented
from becoming cold or hot and accordingly, disagreeable feeling is not
brought about to the passenger of the vehicle.
According to another aspect of the present invention, the smaller a number
of the operating blow condition changing member, the narrower the swing
ranges of the blow condition changing member are set by which a deficiency
in the cooled wind or a deficiency in warm wind can be compensated for
when, for example, solar radiation is present or solar radiation is not
present or the like.
According to another aspect of the present invention, blow condition
changing member on the right seat side and blow condition changing member
on the left seat side are swung such that firstly, blow ranges, blow
positions, blow directions, blow angles, blow regions and so on of air
conditioned blown air are in directions proximate to each other. Further,
a swing range of the right seat side blow condition changing member and a
swing range of the left seat side blow condition changing member are
respectively set in accordance with cooling load. Further, by setting
swing cycles of the right seat side blow condition changing member and the
left seat side blow condition changing member to the same period
regardless of changes in the swing ranges, even when blow direction or
blow position of air conditioned blown air blown from the right seat side
blow outlet, becomes mostly proximate to a passenger of the vehicle on the
left seat side, blow direction or blow position of air conditioned blown
air blown from the left seat side blow outlet becomes mostly proximate to
a passenger of the vehicle on the left seat side. Therefore, an air
curtain is formed between the passenger of the vehicle on the right seat
side and the passenger of the vehicle on the left seat side, and
accordingly, independent temperature control performance of the right seat
side air conditioning zone and the left seat side air conditioning zone
can be maintained.
A timing where blow range, blow position, blow direction, blow angle or
blow region of the right seat side blow condition changing member becomes
mostly proximate to the left seat side air conditioning zone, is
substantially equalized to that of the left seat side blow condition
changing member by which even when timings of starting to operate the
right seat side blow condition changing member and the left seat side blow
condition changing member are shifted from each other, when blow direction
or blow position of air conditioned blown air blown from the right seat
side blow outlet is mostly proximate to a passenger of a vehicle on the
left seat side, blow direction or blow position of air conditioned blown
air blown from the left seat side blow outlet becomes mostly proximate to
a passenger of the vehicle on the right seat side and accordingly, an air
curtain is formed between the passenger of the vehicle on the right seat
side and the passenger of the vehicle on the left seat side and
accordingly, independent temperature control performances of the right
seat side air conditioning zone and the left seat side air conditioning
zone can be maintained.
According to another aspect of the present invention, when swing range of
blow condition changing member which is calculated in accordance with
cooling load, cannot be maintained because of a restriction region set by
restriction region setting member, swing motion of the blow condition
changing member is temporarily stopped until elapse of a predetermined
time period, or swing speed of the blow condition changing member is
delayed. Thus, degradation in durability of the blow condition changing
member can be prevented.
Further, according to the present invention, by substantially equalizing
the length of the time period to a time period necessary for blow
direction or blow position of air conditioned blown air to enter the
restriction region and to leave the restriction region, direction of
blowing air conditioned blown air blown from blow outlet is not frequently
changed, and accordingly, annoying feeling is reduced, and no influence is
effected in a contiguous air conditioning zone. Further, a position, where
the swing motion of the blow condition changing member is temporarily
stopped or the swing speed of the blow condition changing member is
delayed, does not effect influence on a contiguous air conditioning zone
which is at a vicinity of a restriction location of the restriction
region.
According to another aspect of the present invention, when the swing range,
which is set in accordance with cooling load, cannot be maintained because
of a restriction region set by restriction region setting member, the
swing range of the blow condition changing member is widened in a
direction reverse to the restriction region by which an optimum blown air
amount calculated in accordance with the cooling load can be maintained.
Further, by widening the swing range of the blow condition changing member
which is set by the swing range setting member into a direction of
increasing a blown air amount to a rear seat air conditioning zone,
comfortable feeling of a passenger in the rear seat air conditioning zone
is achieved even at an early stage of the air conditioning.
Further, when a cooling load of the first air conditioning zone differs
from a cooling load of the second air conditioning zone, the swing range
of the blow condition changing member for the first air conditioning zone
and the swing range of the blow condition changing member for the second
air conditioning zone are controlled respectively and independently from
each other. Therefore, the difference between the cooling loads of the
first and the second air conditioning zones is cancelled, and comfortable
feeling of passengers in the vehicle is improved.
Further, when the cooling load differs between left and right of the body
of a passenger in the vehicle, by setting the swing range of the blow
condition changing member on the center and the swing range of the blow
condition changing member on the side independently from each other, the
difference between the cooling loads of the left and the right of the body
of the passenger is canceled, and comfortable feeling of the passenger is
improved.
Further, by setting narrowly the swing range of the blow condition changing
member when the solar radiation direction becomes proximate to the side
face of the vehicle from the front face of the vehicle, or by setting
narrowly the swing range of the blow condition changing member of the air
conditioning zone of either of the first air conditioning zone and the
second air conditioning zone where the solar radiation is incident, or by
narrowly setting the swing range of the blow condition changing member on
the side of the passenger of the vehicle where the solar radiation is
incident, air conditioned blown air is intensively supplied to the body of
the passenger intended to provide air conditioned blown air (for example,
the cooled wind) and accordingly, comfortable feeling of the passenger is
significantly improved.
According to another aspect of the present invention, the swing range of
the right seat side blow condition changing member and the swing range of
the left seat side blow condition changing member are respectively set in
accordance with the solar radiation amount detected by solar radiation
detecting member, and the swing range of the right seat side blow
condition changing member and the swing range of the left seat side blow
condition changing member are independently set each other in accordance
with the solar radiation direction detected by the solar radiation amount
detecting member. Therefore, the independent control performance of the
right seat side air conditioning zone and the left seat side air
conditioning zone can be maintained (ensured).
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the present invention will be appreciated,
as well as methods of operation and the function of the related parts,
from a study of the following detailed description, the appended claims,
and the drawings, all of which form a part of this application. In the
drawings:
FIG. 1 is a schematic illustration showing a relationship between air
conditioning cooling load such as a solar radiation amount or the like and
swing ranges of swing louvers according to a first embodiment of the
present invention;
FIG. 2 is a schematic illustration showing a total structure of a vehicle
air conditioning apparatus according to the first embodiment of the
present invention;
FIG. 3 is a front view showing an instrument panel of a vehicle according
to the first embodiment of the present invention;
FIG. 4 is an outline view showing a total constitution of a blow condition
changing device according to the first embodiment of the present
invention;
FIG. 5 is an outline view showing a constitution of a mechanism of swinging
in left and right direction of the blow condition changing device
according to the first embodiment of the present invention;
FIG. 6 is a schematic view showing a swing mechanism of a blow condition
changing device in a vertical direction according to the first embodiment
of the present invention;
FIG. 7 is a flowchart showing an example of control program of ECU
(Electronic Control Unit) of an air conditioner according to the first
embodiment of the present invention;
FIG. 8 is a characteristic diagram showing a characteristic of blower
control voltage in respect of target blow temperature according to the
first embodiment of the present invention;
FIG. 9 is a characteristic diagram showing a characteristic of air outlet
mode in respect of target blow temperature according to the first
embodiment of the present invention;
FIG. 10 is a flowchart showing determination of swing ranges of swing
louvers according to the first embodiment of the present invention;
FIG. 11 is a characteristic diagram showing swing ranges in respect of a
solar radiation direction and a solar radiation intensity according to the
first embodiment of the present invention;
FIG. 12 is a characteristic diagram showing a correction coefficient in
respect of inner air temperature according to the first embodiment of the
present invention;
FIG. 13 is a flowchart showing determination of swing speeds of swing
louvers according to the first embodiment of the present invention;
FIG. 14 is a time chart showing a swing range and a swing cycle of a swing
louver of the blow condition changing device according to the first
embodiment of the present invention;
FIG. 15 is a time chart showing a swing range and a swing cycle of a swing
louver of the blow condition changing device according to the first
embodiment of the present invention;
FIGS. 16A and 16B are front views showing an operation panel of an air
conditioner according to a second embodiment of the present invention;
FIG. 17 is a flowchart showing an example of a control program of ECU of an
air conditioner according to the second embodiment of the present
invention;
FIG. 18 is a flowchart showing automatic louver control according to the
second embodiment of the present invention;
FIG. 19A is a characteristic diagram showing swing ranges in respect of a
solar radiation direction and a solar radiation intensity according to the
second embodiment of the present invention;
FIG. 19B is a characteristic diagram showing an inner air temperature
correction of the swing range according to the second embodiment of the
present invention;
FIG. 19C is a characteristic diagram showing a blower control voltage
correction of the swing range according to the second embodiment of the
present invention;
FIG. 20 is an explanatory view showing swing ranges in accordance with
magnitude of air conditioning thermal loads according to the second
embodiment of the present invention;
FIG. 21A is a characteristic diagram showing a timing of a center louver on
the driver seat side according to the second embodiment of the present
invention;
FIG. 21B is a characteristic diagram showing a timing of the center louver
on the passenger seat side according to the second embodiment of the
present invention;
FIGS. 22A, 22B, 22C and 22D are explanatory views showing examples of way
of widening a swing range in respect of inner air temperature according to
the second embodiment of the present invention;
FIGS. 23A and 23B are explanatory views showing a modified example of way
of widening a swing range in respect of inner air temperature according to
the second embodiment of the present invention;
FIGS. 24A, 24B and 24C are explanatory views showing another modified
example of way of widening a swing range in respect of inner air
temperature according to the second embodiment of the present invention;
FIG. 25 is a characteristic diagram showing swing ranges in respect of a
solar radiation direction according to the second embodiment of the
present invention;
FIGS. 26A, 26B, 26C, 26D and 26E are explanatory views showing a modified
example of way of widening swing ranges in respect of a solar radiation
direction according to the second embodiment of the present invention;
FIG. 27 is a front view showing an air conditioner operation panel
according to a third embodiment of the present invention;
FIG. 28 is a front view showing an instrument panel of a vehicle according
to a fourth embodiment of the present invention;
FIG. 29 is a sectional view showing a face duct of an air conditioning unit
according to the fourth embodiment of the present invention;
FIG. 30 is a perspective view showing a blow condition changing device
according to a fifth embodiment of the present invention;
FIGS. 31A and 31B are explanatory views of operation of the blow condition
changing device according to the fifth embodiment of the present
invention;
FIG. 32 is a sectional view showing a blow condition changing device
according to a sixth embodiment of the present invention;
FIG. 33 is a perspective view showing a blow condition changing device
according to a seventh embodiment of the present invention;
FIG. 34A is a sectional view showing a blow condition changing device
according to the seventh embodiment of the present invention;
FIG. 34B is a part of a sectional view showing a louver itself according to
the seventh embodiment of the present invention;
FIG. 35 is a schematic view of a vehicle showing a position of attaching
the blow condition changing device according to the seventh embodiment of
the present invention;
FIGS. 36A, 36B, 36C and 36D are explanatory views of operation of the blow
condition changing device according to the seventh embodiment of the
present invention;
FIGS. 37A, 37B and 37C are schematic views showing a swing range of air
conditioned blown air according to the seventh embodiment of the present
invention;
FIG. 38 is a disassembled perspective view showing a blow condition
changing device according to an eighth embodiment of the present
invention;
FIGS. 39A, 39B and 39C are explanatory views for operations of the blow
condition changing device according to the eighth embodiment of the
present invention;
FIGS. 40A, 40B and 40C are explanatory views of operation of the blow
condition changing device according to the eighth embodiment of the
present invention;
FIGS. 41A, 41B, 41C, 41D and 41E are perspective views showing modified
examples of rotary valves according to the eighth embodiment;
FIG. 42 is a characteristic diagram showing swing range .theta. in respect
of blower control voltage VA according to a ninth embodiment of the
present invention;
FIG. 43 is a characteristic diagram showing changes in heat reception
amount in respect of changes in left and right angles of solar ray for
left and right passengers at front seats according to a tenth embodiment
of the present invention;
FIGS. 44A, 44B, 44C, 44D and 44E are explanatory views showing setting of
swing ranges in respect of a solar radiation direction according to the
tenth embodiment of the present invention;
FIG. 45 is a characteristic diagram showing swing ranges in respect of the
solar radiation direction at center grills on the driver seat side and the
passenger seat side according to the tenth embodiment of the present
invention;
FIG. 46 is a schematic view showing a mechanism of swinging louvers in left
and right direction of a blow condition changing device according to an
eleventh embodiment;
FIG. 47 is a schematic view showing a mechanism of swinging louvers in up
and down direction of the blow condition changing device according to the
eleventh embodiment of the present invention;
FIG. 48 is a diagram showing a swing range and a swing range compensation
factor in respect of a vehicle speed in an outer air introducing mode
according to a twelfth embodiment of the present invention;
FIG. 49 is a characteristic diagram showing relationships between a swing
range, a swing range compensation factor, post evaporator temperature,
blow temperature, seat temperature and steering temperature according to a
thirteenth embodiment of the present invention; and
FIG. 50 is a characteristic diagram showing a relationships between a swing
range, a swing range compensation factor, skin temperature, humidity in
vehicle compartment or outer air temperature according to a fourteenth
embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
First Embodiment
FIG. 1 through FIG. 15 show a first embodiment of the present invention.
A vehicle air conditioning apparatus according to the embodiment is
constituted to control respective air conditioning member (actuator) in an
air conditioning unit 1 for conditioning air in a vehicle compartment of a
vehicle of an automobile or the like mounted with an engine by an air
conditioning control unit (hereinafter, referred to as an air conditioner
ECU) 50. The air conditioning unit 1 is an air conditioning unit capable
of adjusting temperature on the driver seat side as a first air
conditioning zone on one side of the vehicle compartment of the vehicle
and temperature on the passenger seat side as a second air conditioning
zone on other side of the vehicle compartment of the vehicle independently
from each other.
The air conditioning unit 1 is installed with an air conditioning duct 2
arranged at a front side of the vehicle compartment of the vehicle. The
upstream side of the air conditioning duct 2 is installed with an inner
and outer air switching door 3 and a blower 4. The inner and outer air
switching door 3 is intake port switching member which is driven by a
servo motor 5 for changing opening degrees of an inner air intake port 6
and an outer air intake port 7. The blower 4 is a blower which is driven
to rotate by a blower motor 9 controlled by a blower drive circuit 8 for
causing air flow flowing to the inside of the vehicle compartment in the
air conditioning duct 2.
The central portion of the air conditioning duct 2 is installed with an
evaporator (heat exchanger for cooling) 10 of a refrigerating cycle for
cooling air passing through the inside of the air conditioning duct 2 over
an entire face of the air conditioning duct 2. The downstream side of the
evaporator 10 is installed with a heater core (heat exchanger for heating)
13 for heating air passing through a first air passage 11 and a second air
passage 12. Further, the first air passage 11 and the second air passage
12 are partitioned by a partitioning plate 14 and the heater core 13 is
installed to penetrate the partitioning plate 14. The downstream side of
the heater core 13 is installed with air mix (A/M) doors 15 and 16 for the
driver seat side and the passenger seat side for adjusting temperature at
the driver seat side air conditioning zone and the passenger seat side air
conditioning zone in the vehicle compartment independently from each
other. Further, the driver seat side and the passenger seat side A/M doors
15 and 16 are driven by servo motors 17 and 18.
On the downstream side of the first air passage 11, a defroster (DEF) blow
outlet 20, a driver seat side center face (FACE) blow outlet (right seat
side blow outlet, first center blow outlet, upper blow outlet) 21a, a
driver seat side side face (FACE) blow outlet (right seat side blow
outlet, first side blow outlet, upper blow outlet) 22a and a driver seat
side foot (FOOT) blow outlet 23a, are opened. Further, air conditioned
blown air is blown from the DEF blow outlet 20 not only to an inner face
of a front window in the driver seat side air conditioning zone but also
to an inner face of the front window in the passenger seat side air
conditioning zone. Further, on the downstream side of the second air
passage 12, a passenger seat side center face (FACE) blow outlet (left
seat side blow outlet, second center blow outlet, upper blow outlet) 21b,
a passenger seat side side face (FACE) blow outlet (left seat side blow
outlet, second side blow outlet, upper blow outlet) 22b and a passenger
seat side foot (FOOT) blow outlet 23b, are opened. Further, the inside of
the first and the second air passages 11 and 12 are installed with driver
seat side and passenger seat side blow outlet switching doors 24 through
28 for setting air outlet modes on the driver seat side and the passenger
seat side in the vehicle compartment independently from each other.
Further, the driver seat side and the passenger sear side blow outlet
switching doors 24 through 28 are mode switching doors which are driven by
servo motors 30 through 32 for respectively switching the air outlet modes
on the driver seat side and the passenger seat side. In this case, there
are an FACE mode, a B/L mode, an FOOT mode, an F/D mode, a DEF mode and so
on as air outlet modes on the driver seat side and the passenger seat
side. Further, the driver seat side and the passenger seat side center
FACE blow outlets 21a and 21b as well as the driver seat side and the
passenger seat side side FACE blow outlets 22a and 22b are respectively
installed with blow condition changing devices at an instrument panel
(storing member) 39. Further, the driver seat side side FACE blow outlet
22a and the passenger seat side side FACE blow outlet 22b may respectively
installed to front side doors or inner panels of side face bodies of the
vehicle.
Next, a simple explanation will be given of the blow condition changing
devices in reference to FIG. 1 through FIG. 6. The blow condition changing
devices are respectively installed in driver seat side and passenger seat
side center grilles 41a and 41b and driver seat side and passenger seat
side side grilles 42a and 42b. Further, air passages of the grilles 41a,
41b, 42a and 42b are utilized as the driver seat side and the passenger
seat side center FACE blow outlets 21a and 21b as well as the driver seat
side and the passenger seat side side FACE blow outlets 22a and 22b
mentioned above. Further, each of the grilles 41a, 41b, 42a and 42b is
installed with a louver left and right direction swinging mechanism and a
louver up and down direction swinging mechanism.
The louver left and right direction swinging mechanism corresponds to an
actuator or a right seat side actuator or a left seat side actuator
according to the present invention and as shown by FIG. 5, the mechanism
is constituted by a plurality of rows of louver fins (deflecting plates:
hereinafter, referred to as swing louvers) 43 which are installed in left
and right direction (horizontal direction) in respect of the progressing
direction of the vehicle in each of the grilles, a link lever 44 for
swinging the plurality of sheets of swing louvers 43 centering on fulcra
thereof in left and right direction in a predetermined swing range and a
louver motor (for example, DC (Direct Current) servo motor) 45 as louver
driving member for reciprocating the link lever 33 in left and right
direction via an arm plate 44a.
Further, the swing louvers 43 of the passenger seat side center and side
grilles 41a and 42a correspond to blow condition changing member or right
seat side blow condition changing member according to the present
invention and are also referred to as center louvers or side louvers.
Further, the swing louvers 43 of the passenger seat side center and side
grilles 41b and 42b correspond to blow condition changing member or left
seat side blow condition changing member according to the present
invention and are also referred to as center louvers or side louvers.
The louver up and down direction swing mechanism corresponds to an actuator
according to the present invention and as shown by FIG. 6, the mechanism
is constituted by a plurality of rows of louver fins (deflecting plates:
hereinafter, referred to as swing louvers) 46 which are installed in up
and down direction in respect of the progressing direction of the vehicle
in each of the grills, a link lever 47 for swinging the plurality of
sheets of swing louvers 46 centering on fulcra thereof in up and down
direction in a predetermined swing range and a louver motor (for example,
DC servo motor) 48 as louver driving member for reciprocating the link
lever 47 via an arm plate 47a in up and down direction. Further, the swing
louvers 46 in each of the grilles correspond to blow condition changing
member according to the present invention.
An air conditioner ECU 50 is installed with a well-known microcomputer
comprising CPU, ROM, RAM or the like at inside thereof and is constituted
such that sensor signals from respective sensors are inputted to the
microcomputer by an input circuit, not illustrated, after A/D (Analogue to
Digital) conversion. Further, as shown by FIG. 2, the air conditioner ECU
50 is connected with a driver seat side temperature setting switch 51 for
setting the driver seat side air conditioning zone to desired temperature,
a passenger seat side temperature setting switch 52 for setting the
passenger seat side air conditioning zone to desire temperature, a switch
53 and so on.
Further, the swing switch 53 is louver operation instructing member for
instructing operation and stoppage of swinging of the swing louvers 43 and
46 of the blow condition changing devices of the respective grilles 41a,
41b, 42a, 42b (respective FACE blow outlets 21a, 21b, 22a and 22b).
Further, the air conditioner ECU 50 is connected with an inner air
temperature sensor 54 for detecting temperature in vehicle compartment
(hereinafter, referred to as inner air temperature), an outer temperature
sensor 55 for detecting temperature outside of vehicle compartment
(hereinafter, referred to as outer air temperature) and a solar radiation
sensor 56 as solar radiation amount detecting member. Further, the air
conditioner ECU 50 is connected with a post evaporator temperature sensor
57 for detecting air temperature immediately after passing through the
evaporator 10 (hereinafter, referred to as post evaporator temperature), a
cooling water temperature sensor 58 for detecting cooling water
temperature of the engine and potentiometers 59 and 60 for detecting blow
direction and blow position of air conditioned blown air from the FACE
blow outlet.
Among them, the solar radiation sensor 56 corresponds to cooling load
detecting member according to the present invention and is provided with
solar radiation intensity detecting member (for example, photo transistor,
photo diode, solar cell) for detecting solar radiation amounts (solar
radiation intensities) irradiated on the driver seat side and the
passenger seat side air conditioning zones. Further, the air conditioner
ECU 50 is provided with solar radiation direction calculating member
(which corresponds to solar radiation direction detecting member according
to the present invention) for calculating irradiation direction (solar
radiation direction, solar radiation azimuth) of solar ray by reading an
output signal (solar radiation amount signal) of the solar radiation
sensor 56 and solar radiation elevation calculating member (solar
radiation direction detecting member) for calculating elevation (angle of
elevation of solar radiation, elevation of solar radiation, angle of
elevation of the sun) of solar ray.
In this case, as cooling load detecting member for detecting cooling load
of the inside of the vehicle compartment, blow air amount from the
respective FACE blow outlets 21a, 21b, 22a and 22b, a blower wind amount
of the blower 4, applied voltage (blower control voltage) of the blower
motor 9, set temperature, inner air temperature, outer air temperature,
post evaporator temperature, cooling water temperature, actual blow
temperature, target blow temperature, vehicle speed, seat temperature at
front seats (driver seat, passenger seat), steering wheel temperature,
skin temperature, a number of passengers of the vehicle and the like are
conceivable and sensors for detecting these values and temperature setting
member for setting temperature can also be used as the cooling load
detecting member.
The potentiometer 59 is louver position detecting member (blow direction
detecting member) for detecting blow direction or blow position in left
and right direction of the plurality of sheets of swing louvers 43 and is
installed at a vicinity of each of the louver left and right direction
swinging mechanism. Further, potentiometer 60 is louver position detecting
member (blow direction detecting member) for detecting blow direction or
blow position in up and down direction of the plurality of sheets of swing
louvers 46 and is installed at a vicinity of each of the louver up and
down direction swinging mechanism. As shown by FIG. 5 and FIG. 6,
specifically, the potentiometers 59 and 60 comprise movable terminals 59a
and 60a reciprocating in left and right direction and in up and down
direction integrally with the ring levers 44 and 47, resistor elements 59b
and 60b changing voltage dividing ratios by movements of the movable
terminals 59a and 60a and so on.
Next, an explanation will be given of a method of controlling air
conditioning by the air conditioner ECU 50 according to the embodiment in
reference to FIG. 1 through FIG. 15. First, when an ignition switch is
turned ON and direct current power source is supplied to the air
conditioner ECU 50, execution of control program (routine of FIG. 7) is
started. In this occasion, firstly, memories for processing data or the
like are initialized (step S1). Next, the operation reads data. That is,
the operation inputs signals from various switches and sensor signals from
various sensors (step S2).
Next, the operation calculates target blow temperature TAO (Dr) on the
driver seat side and target blow temperature TAO (Pa) on the passenger
seat side based on stored data mentioned above, Equation 1 and Equation 2
as follows (step S3).
TAO(Dr)=Kset-Tset(Dr)-KR.multidot.TR-KAM.multidot.TAM-KS.multidot.TS+Kd(Dr)
{CD(Dr)+Ka(Dr)(10-TAM)}{Tset(Dr)-Tset(Pa)}+C (Equation 1)
TAO(Pa)=Kset-Tset(Pa)-KR.multidot.TR-KAM.multidot.TAM-KS.multidot.TS+Kd(Pa)
{CD(Pa)+Ka(Pa)(10-TAM)}{Tset(Pa)-Tset(Dr)}+C (Equation 2)
In these equations, notations Tset(Dr) and Tset(Pa) represent a set
temperature of the driver seat side air conditioning zone and a set
temperature of the passenger seat side air conditioning zone,
respectively. Notations TR, TAM and TS represent inner air temperature,
outer air temperature and an amount of solar radiation into the vehicle
compartment, respectively. Notations Kset, KR, KAM, KS, Kd(Dr) and Kd(Pa)
represent gain of temperature setting, gain of inner air temperature, gain
of outer air temperature, gain of solar radiation amount, and gain of
correction of temperature difference between the first and the second air
conditioning zones, respectively. Notations Ka(Dr) and Ka(Pa) respectively
represent gains of correction degrees of influence effected on respective
air conditioning temperatures of the driver seat side air conditioning
zone and the passenger seat side air conditioning zone by the outer air
temperature TAM. Notations CD(Dr) and CD(Pa) represent constants in
accordance with the degrees of influence mentioned above, and notation C
represents a correction coefficient. In this case, values of notations
Ka(Dr), Ka(Pa), CD(Dr) and CD(Pa) are changed by various parameters such
as shape or size of the vehicle, blowing direction of the air conditioning
unit 1 and so on.
Next, the operation calculates blower control voltage VA applied on the
blower 4 based on the target blow temperature TAO(Dr) on the driver seat
side and the target blow temperature TAO(Pa) on the passenger seat side
(step S4). Specifically, the blower control voltage VA is calculated by
providing blower control voltages VA(Dr) and VA(Pa) in compliance with the
target blow temperatures TAO(Dr) and TAO(Pa) based on a characteristic
diagram of FIG. 8 and by averaging the blower control voltages VA(Dr) and
VA(Pa).
Next, respective air outlet modes of the driver seat side air conditioning
zone and the passenger seat side air conditioning zone are determined
based on the target blow temperature TAO(Dr) on the driver seat side and
the target blow temperature TAO(Pa) on the passenger seat side mentioned
above and a characteristic of air outlet mode in respect of target blow
temperature shown by a characteristic diagram of FIG. 9 (step S5).
Specifically, in determining the air outlet mode, an FACE mode, a B/L
mode, an FOOT mode and an F/D mode are constituted from low temperature to
high temperature of the target blow temperatures TAO(Dr) and TAO(Pa).
Further, the F/D mode may be set only when a air outlet mode changeover
switch installed on an air conditioner operation panel, not illustrated,
is operated.
Further, the FACE mode mentioned above is a air outlet mode blowing air
conditioned blown air toward an upper half (head, breast) of the body of a
passenger of a vehicle. Further, the B/L mode is an air outlet mode
blowing air conditioned blown air toward the upper half (head, breast) and
the feet of a passenger of a vehicle. Further, the FOOT mode is an air
outlet mode for blowing air conditioned blown air toward the feet of a
passenger of a vehicle. Further, the F/D mode is an air outlet mode for
blowing air conditioned blown air toward the feet of a passenger of a
vehicle and an inner face of a front window of a vehicle. Further,
according to the embodiment, when the defroster switch installed on an air
conditioner operation panel, not illustrated, is operated DEF mode blowing
air conditioned blown air toward an inner face of a front window is set.
Further, in any of the air outlet modes, the driver seat side side FACE
blow outlet 22a and the passenger seat side side FACE blow outlet 22b are
opened.
Next, the operation calculates an opening degree SW(Dr) (%) of the driver
seat side A/M door 15 and an opening degree SW(Pa) (%) of the passenger
seat side A/M door 16 (step S6). Further, such a calculation of the
opening degree SW(Dr) and the opening degree SW(Pa) is carried out based
on the target blow temperature TAO(Dr) on the driver seat side and the
target blow temperature TAO(Pa) on the passenger seat side, post
evaporator temperature (TE) detected by the post evaporator temperature
sensor 57, cooling water temperature (TW) detected by the cooling water
temperature sensor 58 and Equation 3 and Equation 4 as follows.
SW(Dr)={TAO(Dr)-TE}.times.100/(TW-TE) (Equation 3)
SW(Pa)={TAO(Pa)-TE}.times.100/(TW-TE) (Equation 4)
Next, a routine shown in FIG. 10 (described later) is started and the swing
ranges of the swing louvers 43 and 46 of the blow condition changing
devices (swing range setting means: step S7) of the respective grilles
41a, 41b, 42a and 42b (respective FACE air outlets 21a, 21b, 22a, 22b),
are determined. Incidentally, when the operating swing louvers 43 and 36
are only the swing louvers 43 and 46 of the driver seat side and the
passenger seat side center grilles 41a and 41b or only the swing louvers
43 and 46 of the driver seat side and the passenger seat side side grilles
42a and 42b, swing ranges are set to be the swing ranges calculated at
step S7 multiplied by 0.7. Thereby, deficiency of the cooled wind in the
case of presence of solar radiation or the like can be compensated for.
Further, it has been discovered by an experiment that the driver seat side
side grille 42a is proximate to the right hand holding the steering wheel,
and the cooled wind is intensively blown to the right hand and unpleasant
feeling caused by local refrigeration is brought about to a driver. Hence,
the swing ranges of the swing louvers (side louvers) 43 and 46 of the
driver seat side side grille 42a is set to be the swing ranges calculated
at step S7 multiplied by 1.3. Thereby, the cooled wind is prevented from
intensively impinging on the right hand of the driver. Further, in
consideration of outlook, the swing ranges of the swing louvers (side
louvers) 43 and 46 of the passenger seat side side grille 42b may
similarly be widened.
Next, routine of FIG. 13 (described later) is started and swing cycles of
the swing louvers 43 and 46 of the blow condition changing devices are set
to constant periods. Specifically, swing speeds of the swing louvers 43
and 46 are determined (swing speed setting means: step S8).
Next, an output signal is sent to the blower driver circuit 8 to constitute
the determined blower control voltage VA. Further, the servo motors 30
through 32 are controlled by electricity conduction to constitute the
determined air outlet mode. Further, the servo motors 17 and 18 are
controlled by electricity conduction to constitute the determined opening
degree SW(Dr) and the determined opening degree SW(Pa). Further, control
signals are sent to the louver motors 45 and 48 to constitute the
determined swing range and the determined swing speed (blow condition
controlling means: step S9). Next, after elapse of predetermined control
period time (.tau.) at step S10, the operation returns to the processing
of step S2.
Next, an explanation will be given of control of determining swing ranges
of swing louvers by the air conditioner ECU 50 in reference to FIG. 10
through FIG. 12.
First, when routine of FIG. 10 is started, the operation determines whether
the swing switch 53 is turned on (ON) (step S11). When a result of
determination is NO, the operation finishes with the routine of FIG. 10.
Further, when the result of determination at step S11 is YES, the operation
determines whether the air outlet mode is the FACE mode or the B/L mode
(step S12). When the result of determination is NO, the operation finishes
with the routine of FIG. 10.
Further, when the result of determination at step S12 is YES, solar
radiation direction and solar radiation intensity of the driver seat side
air conditioning zone and solar radiation direction and solar radiation
intensity of the passenger seat side air conditioning zone based on the
solar radiation amount detected by the solar radiation sensor 56 (solar
radiation direction calculating member, solar radiation intensity
calculating member: step S13).
Next, the operation calculates the swing ranges (swing angles) .theta.(Dr)
and .theta.(Pa) of the swing louvers 43 and 46 of the blow condition
changing devices of the respective grilles 41a, 41b, 42a and 42b
(respective FACE blow outlets 21a, 21b, 22a, 22b) based on the solar
radiation direction and the solar radiation intensity of the driver seat
side air conditioning zone and the solar radiation direction and the solar
radiation intensity of the passenger seat side air conditioning zone which
have been calculated at step S13 and a characteristic diagram of FIG. 11
(swing range calculating means: step S14).
Next, the operation carries out an inner air temperature compensation
(correction) in respect of the swing ranges .theta.(Dr) and .theta.(Pa) of
the swing louvers 43 and 46 which have been calculated at step S14.
Specifically, the operation calculates target swing ranges .theta.(Dr) and
.theta.(Pa) based on the swing ranges .theta.(Dr) and .theta.(Pa) of the
swing louvers 43 and 46, a characteristic diagram of FIG. 12, Equation 5
and Equation 6 specified below (inner air temperature correction member:
step S15). Thereafter, the operation finishes with the routine of FIG. 10.
.theta.(Dr)=.theta.(Dr).times..alpha. (Equation 5)
.theta.(Pa)=.theta.(Pa).times..alpha. (Equation 6)
Next, an explanation will be given of control of determining swing speeds
of swing louvers by the air conditioning ECU 50 in reference to FIG. 13
through FIG. 15.
First, when routine of FIG. 13 is started, the operation determines whether
the swing switch 53 is turn on (ON) (step S16). When a result of
determination is NO, the operation finished with the routine of FIG. 13.
Further, when the result of determination at step S16 is YES, the operation
determines whether the air outlet mode is the FACE mode or the B/L mode
(step S17). When the result of determination is NO, the operation finishes
with the routine of FIG. 13.
Further, when the result of determination at step S17 is YES, the operation
reads the swing ranges .theta.(Dr) and .theta.(Pa) of the swing louvers 43
and 46 of the respective grilles 41a, 41b, 42a and 42b which have been
calculated at step S14 of FIG. 10 mentioned above (step S18).
Next, the operation calculates the swing speeds of the swing louvers 43 and
46 of the respective FACE blow outlets based on the swing ranges
.theta.(Dr) and .theta.(Pa) of the swing louvers 43 and 46 which have been
read at step S18 mentioned above and characteristic diagrams of FIG. 14
and FIG. 15 (step S19). Thereafter, the operation finishes with the
routine of FIG. 13.
Specifically, the swing speed of the swing louvers 43 and 46 becomes higher
in proportion to the increase of the swing range of the swing louvers 43
and 46 to keep the swing cycle constant. Conversely, the swing speed of
the swing louvers 43 and 46 becomes lower in proportion to the decrease of
the swing range of the swing louvers 43 and 46 to keep the swing cycle
constant.
Next, an explanation will be given of the operation of the vehicle air
conditioning apparatus according to the embodiment in reference to FIG. 1
through FIG. 15.
When the swing switch 53 is turn on (ON), in the case where the air outlet
mode is the FACE mode (may be B/L mode), outer air sucked from the outer
air intake port 7 by the operation of the blower 4 is cooled down to, for
example, about 4.degree. C., thereafter, air enters the first and the
second air passages 11 and 12 and an amount of passing the heater core 13
is adjusted in accordance with opening degrees of the driver seat side and
the passenger seat side air mix doors 15 and 16 to thereby constitute air
conditioned blown air at optimum temperature, respectively.
Thereafter, air conditioned blown air (the cooled wind) is blown to the
driver seat side air conditioning zone and the passenger seat side air
conditioning zone from the driver seat side center FACE blow outlet 21a,
the driver seat side side FACE blow outlet 22a, the passenger seat side
center FACE blow outlet 21b and the passenger seat side side FACE blow
outlet 22b which are opened at the most downstream ends of the first and
the second air passages 11 and 12. Particularly, the cooled wind is blown
toward the upper half of the body (head, breast) of the passenger of a
vehicle at a driver's seat from the driver seat side center FACE blow
outlet 21a and the driver seat side side FACE blow outlet 22a and blown
out to the upper half of the body (head, breast) of a passenger at a
passenger's seat from the passenger seat side center FACE blow outlet 21b
and the passenger seat side side FACE blow outlet 22b.
In this case, the operation calculates the solar radiation direction and
the solar radiation intensity of the driver seat side air conditioning
zone and the solar radiation direction and the solar radiation intensity
of the passenger seat side air conditioning zone based on the solar
radiation amount detected by the solar radiation sensor 56. Further, the
operation calculates the swing ranges .theta.(Dr) and .theta.(Pa)
constituting swing angles of the swing louvers 43 and 46 of respective
FACE blow outlets 21a, 21b, 22a and 22b based on the calculated value of
the solar direction and the solar intensity and the characteristic diagram
of FIG. 11.
For example, according to the swing range .theta.(Dr) which is equal to a
total swinging angle of the swing louvers 43 of the driver seat side
center FACE blow outlet 21a and the driver seat side side FACE blow outlet
22a, is 20.degree. when the solar radiation direction A is 60.degree. on
the right side of the progressing direction of the vehicle and the solar
intensity is 1000 W/m.sup.2 or higher, and 30.degree. when the solar
radiation intensity is 500 W/m.sup.2 and 35.degree. when the solar
radiation intensity is 100 W/m.sup.2 or lower as shown by FIG. 1 and the
characteristic diagram of FIG. 11. Accordingly, the swing range
.theta.(Dr) of the swing louver 43 is set such that even in the case of
the same solar radiation direction, the larger the solar radiation
intensity, the narrower the swing range .theta.(Dr) of the swing louver 43
is set. Further, the same goes with the swing range .theta.(Dr) of the
swing louver 46.
Further, for example, as shown by FIG. 1 and the characteristic diagram of
FIG. 11, the swing range .theta.(Dr) of the swing louvers 43 of the driver
seat side center FACE blow outlet 21a and the driver seat side side FACE
blow outlet 22a, is 55.degree. in the case of the radiation intensity of
the 500 W/m.sup.2 and the radiation direction A is 60.degree. on the left
side of the progressing direction of the vehicle and 40.degree. when the
solar radiation direction A is 0.degree. which is equal to the progressing
direction of the vehicle and 30.degree. when the solar radiation intensity
is 500 W/m.sup.2 and the solar radiation direction A is 60.degree. on the
right side of the progressing direction of the vehicle. Further, the same
goes with the swing range .theta.(Dr) of the swing louver 46.
Further, as shown by FIG. 1 and the characteristic diagram of FIG. 11, the
swing range .theta.(Pa) of the swing louvers 43 of the passenger seat side
center FACE and side FACE blow outlets 21b and 22b, is 45.degree. when the
solar radiation direction A is 60.degree. on the right side of the
progressing direction of the vehicle and the solar radiation intensity is
1000 W/m.sup.2 or higher and 55.degree. when the solar radiation intensity
is 500 W/m.sup.2 and 65.degree. when the solar radiation intensity is 100
W/m.sup.2 or lower. Accordingly, the swing range .theta.(Pa) of the swing
louver 43 is set such that even in the case of the same solar radiation
direction, the larger the solar radiation intensity, the narrower the
swing range .theta.(Pa) of the swing louver 43 is set. Further, the same
goes with the swing range .theta.(Pa) of the swing louver 46.
Further, as shown by FIG. 1 and the characteristic diagram of FIG. 11, for
example, the swing range .theta.(Pa) of the swing louvers 43 of the
passenger seat side center FACE and side FACE blow outlets 21b and 22b, in
the case of the solar radiation intensity of 500 W/m.sup.2, when the solar
radiation direction A is 60.degree. on the left side of the progressing
direction of the vehicle and 40.degree. when the solar radiation direction
A is 0.degree. which is equal to the progressing direction of the vehicle
and 55.degree. in the case of the solar radiation intensity of 500
W/m.sup.2, when the solar radiation direction A is 60.degree. on the right
side of the progressing direction of the vehicle. Further, the same goes
with the swing range .theta.(Pa) of the swing louver 46.
In this case, according to the embodiment, the swing ranges .theta.(Dr) and
.theta.(Pa) of the swing louvers 43 are corrected in accordance with not
only the air conditioning thermal load of the solar radiation amount
detected by the solar radiation sensor 56 or the like but also the air
conditioning thermal load of the driver seat side and the passenger seat
side air conditioning zones. For example, the lower the set temperatures
Tset(Dr) and Tset(Pa) on the driver seat side and the passenger seat side
which are set by the driver seat side and the passenger seat side
temperature setting switches 51 and 52, the narrower the swing ranges
.theta.(Dr) and .theta.(Pa) of the swing louvers 43 are corrected to set.
Further, the larger the temperature deviations between the set
temperatures Tset(Dr) and Tset(Pa) on the driver seat side and the
passenger seat side and the inner air temperature (TR) detected by the
inner air temperature sensor 54, the narrower the swing ranges .theta.(Dr)
and .theta.(Pa) of the swing louvers 43 are corrected to set. Further, the
same goes with the swing ranges .theta.(Dr) and .theta.(Pa) of the swing
louvers 46.
Further, the swing speeds are determined in accordance with the determined
swing ranges .theta.(Dr) of the swing louvers 43 and 46 of the driver seat
side center FACE and side FACE blow outlets 21a and 22a and the determined
swing ranges .theta.(Pa) of the swing louvers 43 and 46 of the passenger
seat side center FACE and side FACE blow outlets 21b and 22b.
A swing speed of the swing louvers 43 of the driver seat side center FACE
and side FACE blow outlets 21a and 22a becomes a speed indicated by a bold
line in the characteristic diagram of FIG. 14 in the case where the swing
range .theta.(Dr) is within 15.degree. from center in left and right
direction (up and down direction) and is a speed indicated by a broken
line in the characteristic diagram of FIG. 14 in the case where the swing
range .theta.(Dr) is within 30.degree. from center in left and right
direction (up and down direction). Thereby, even when the swing range
.theta.(Dr) is changed, the swing louver 43 is swung always at a constant
period. Further, the same goes with the swing range .theta.(Dr) of the
swing louver 46.
Further, similarly, the swing speed of the swing louvers 43 of the
passenger seat side center FACE and side FACE blow outlets 21b and 22b
becomes a speed indicated by a bold line in the characteristic diagram of
FIG. 15 in the case where the swing range .theta.(Pa) is within 15.degree.
in left and right direction (up and down direction) and a speed shown by a
broken line in the characteristic diagram of FIG. 15 in the case where the
swing range .theta.(Pa) is within 30.degree. from center in left and right
direction (up and down direction). Thereby, the swing louver 43 is swung
always at a constant period even when the swing range .theta.(Pa) is
changed. Further, the same goes with the swing range .theta.(Pa) of the
swing louver 46.
According to the vehicle air conditioning apparatus of the first
embodiment, the larger the air conditioning thermal load at inside of the
vehicle compartment (for example, the larger the solar radiation amount,
the lower the set temperature or the larger the temperature deviation
between the set temperature and the inner air temperature), the narrower
the swing ranges of the swing louvers 43 and 46 become, and accordingly,
the cooled wind is supplied to a passenger of a vehicle on the driver seat
side of a passenger of the vehicle on the passenger seat side locally (in
a spot-like shape). Further, the swing speeds of the swing louvers 43 and
46 are also retarded and accordingly, the cooled wind is supplied
intensively at a portion of the body intended to provide the cooled wind
feeling and accordingly, agreeable feeling of passengers of the vehicle
can significantly be promoted.
Further, even when the swing ranges of the swing louvers 43 and 46 are
narrowed, directions of blowing the cooled wind blown from the respective
FACE blow outlets 21a, 21b, 22a and 22b are not frequently changed and
accordingly, a passenger of a vehicle on the driver seat side or a
passenger of a vehicle on the passenger seat side is not annoyed and
unpleasant feeling of the passenger of a vehicle on the driver seat side
or a passenger of a vehicle on the passenger seat side can be resolved.
Conversely, the smaller the air conditioning thermal load at inside of the
vehicle compartment (for example, the smaller the solar radiation amount,
the higher the set temperature or the smaller the temperature deviation
between the set temperature and the inner temperature), the wider the
swing ranges of the swing louvers 43 and 46 become and accordingly, the
cooled wind is supplied to the passenger of a vehicle on the driver seat
side or the passenger of a vehicle on the passenger seat side in a wide
range. Further, the swing speeds of the swing louvers 43 and 46 are
accelerated and accordingly, unpleasant feeling (cold feeling) as a result
of receiving the cooled wind intensively at a specified portion can be
prevented as less as possible and accordingly, the pleasant feeling of the
passengers in the vehicle can significantly be promoted.
Furthermore, according to the embodiment, the swing ranges of the swing
louvers 43 and 46 of the driver seat side center FACE and side FACE blow
outlets 21a and 22a for blowing the cooled wind in the driver seat side
air conditioning zone, can be made different from the swing ranges of the
swing louvers 43 and 46 of the passenger seat side center FACE and side
FACE blow outlets 21b and 22b for blowing the cooled wind into the
passenger seat side air conditioning zone and accordingly, a pleasant air
conditioning state in correspondence with the air conditioning feeling and
the air conditioning thermal load of a passenger of a vehicle on the
driver seat side and a passenger of a vehicle on the passenger seat side,
can be formed.
Here, when the swing louvers 43 of the driver seat side center grille and
the passenger seat side center grille 41a and 41b are initially moved,
there is a case where the swing louvers 43 of the respective grilles 41a
and 41b are swung such that a direction of blowing the cooled wind to a
passenger of a vehicle on the driver seat side and a direction of blowing
the cooled wind to a passenger of a vehicle on the passenger seat side,
are made proximate to each other. In this case, the swing cycles of the
swing louvers 43 of the respective grilles 41a and 41b are set to a
constant period even when both of the swing ranges of the driver seat side
center grille 41a and the passenger seat side center grille 41b are
narrowed because the air conditioning thermal load of the driver seat side
air conditioning zone and the passenger seat side air conditioning zone is
large.
Thereby, even when the direction of blowing the cooled wind blown from the
driver seat side center FACE blow outlet 21a is mostly made proximate to
the passenger of the vehicle on the passenger seat side, the direction of
blowing the cooled wind blown from the passenger seat side center FACE
blow outlet 21b is mostly made proximate to the passenger of the vehicle
on the driver seat side. Accordingly, an air curtain is formed between the
passenger of the vehicle on the driver seat side and the passenger of the
vehicle on the passenger seat side and accordingly, in the case where
temperature control of the driver seat side air conditioning zone and
temperature control of the passenger seat side air conditioning zone are
carried out independently from each other, independent temperature control
performances of the driver seat side air conditioning zone and the
passenger seat side air conditioning zone can be promoted.
Second Embodiment
FIGS. 16, 17, 18, 19A, 19B, 19C, 20, 21A, 21B, 22A, 22B, 22C, 22D, 23A,
23B, 24A, 24B, 24C, 25, 26A, 26B, 26C, 26D and 26E show a second
embodiment of the present invention.
According to the embodiment, the driver seat side side FACE and the
passenger seat side side FACE blow outlets 22a and 22b are always opened
even when the air outlet mode is the FOOT mode, the F/D mode or the DEF
mode for removing fogging of inner faces of neighboring side windows and
defogging thereof. Further, according to the embodiment, the plurality of
sheets of swing louvers 43 and 46 installed at the driver seat side center
FACE and the passenger seat side center FACE blow outlets 21a and 21b, are
referred to as center louvers 43 and 46 and the plurality of sheets of the
swing louvers 43 and 46 installed at the driver seat side side FACE and
the passenger seat side side FACE blow outlets 22a and 22b are referred to
as side louvers 43 and 46. Further, the solar radiation sensor 56
according to the embodiment is provided with solar radiation intensity
detecting member for detecting a solar radiation amount irradiated into
the vehicle compartment, solar direction detecting member for detecting a
direction of irradiating solar ray and solar radiation elevation detecting
member for detecting elevation of solar ray.
Further, an air conditioner operation panel 64 is arranged with a driver
seat side temperature setting switch 65, a passenger seat side temperature
setting switch 66, an AUTO switch 67 for instructing automatic control, an
OFF switch 68 for instructing to stop control, a blower switch 69 for
setting a wind amount level of the blower 4, a DUAL switch 70 for carrying
out temperature control of the driver seat side and the temperature
control of the passenger seat side independently from each other, a MODE
switch 71 for switching the air outlet mode, an A/C switch 72 for
instructing operation and stoppage of a refrigerating cycle, an R/F switch
73 for switching the intake port mode, an FrDEF switch 74 for preventing
fogging of a front window, an RrDEF switch 75 for preventing fogging of a
rear window, a louver operation panel 76 for operating blow condition
changing devices and so on. The various switches may be installed in a
remote controller for carrying out remote operation.
Among them the louver operation panel 76 is installed with an operation
mode changeover switch 77 of the blow condition changing devices, five
pieces of LCDs (Liquid Crystal Display) which are turned on in accordance
with the switched operation modes, a driver seat side push bottom 78 for
operating only the blow condition changing devices on the driver seat
side, a passenger seat side push bottom 79 for operating only the blow
condition changing devices on the passenger seat side and a MATCH push
bottom 80 for operating both of the blow condition changing devices on the
driver seat side and the passenger seat side. Further, the operation mode
changeover switch 77 can be switched by turning it to respective operation
modes of "STOP" for stopping the operation of the blow condition changing
devices, "AUTO" for automatically controlling the operation of the blow
condition changing devices (automatic louver control), "Rr" for increasing
a blown air amount to the rear seat side air conditioning zone,
"R-L/SWING" for operating the louver left and right direction swing
mechanism, "U-D/SWING" for operating only the louver up and down direction
swinging mechanism and so on. In the drawing, numeral 81 designates
operation levers for manually operating shutter mechanism (not
illustrated) for opening and closing the respective center FACE blow
outlets 21a and 21b and numeral 82 designates knobs for changing
directions of the swing louvers 43 and 46 by manual operation of
passengers of a vehicle.
Next, an explanation will be given of a method of controlling air
conditioning by the air conditioning ECU 50 according to the embodiment in
reference to FIGS. 16, 17, 18, 19A, 19B, 19C, 20, 21A, 21B, 22A, 22B, 22C,
22D, 23A, 23B, 24A, 24B, 24C, 25, 26A, 26B, 26C, 26D and 26E.
An explanation will be given of the embodiment only in respect of a point
different from the flowchart of FIG. 7 according to the first embodiment.
That is, after finishing the control processing of step S6 in FIG. 17,
automatic louver control of the center louvers 43 and 46 and the side
louvers 43 and 46 of the blow condition changing devices is carried out by
starting routine of FIG. 18 (step S20). Thereafter, the control processing
of step S9 similar to that in the first embodiment is carried out.
Next, an explanation will be given of the automatic louver control by the
air conditioning ECU 50 in reference to FIGS. 18, 19A, 19B, 19C, 20, 21A,
21B, 22A, 22B, 22C, 22D, 23A, 23B, 24A, 24B, 24C, 25, 26A, 26B, 26C, 26D
and 26E. FIG. 18 is a flowchart showing the automatic louver control by
the air conditioning ECU 50.
First, when the routine of FIG. 18 is started, the operation determines
whether the air outlet mode is the FACE mode or the B/L mode (step S21).
When a result of determination is NO, that is, when the air outlet mode is
the FOOT mode, the F/D mode or the DEF mode, directions of the louvers are
determined such that the respective side louvers 43 and 46 are directed to
neighboring side windows with a purpose of defogging the side windows and
cutting cold radiation thereof (louver direction determining member: step
S22). Thereafter, the operation finishes with the routine of FIG. 18.
Further, when the result of determination at step S21 is YES, that is, when
the air outlet mode is the FACE or the B/L mode, the operation determines
whether the vehicle compartment is to be cooled down. That is, the
operation determines whether Equation 7 and Equation 8 specified below are
satisfied (step S23).
5 (.degree. C.)<{TR-Tset(Dr)} Equation 7
5 (.degree. C.)<{TR-Tset(Pa)} Equation 8
where notation TR designates the inner air temperature detected by the
inner air temperature sensor 54 and notations Tset(Dr) and Tset(Pa) are
set temperatures on the drivers seat side and the passenger seat side
which have been set by the drivers seat side and the passengers seat side
temperature setting switches 65 and 66. Further, it is preferable that a
criterion of the cooled-down state is varied by the air conditioning
thermal load at an initial stage of air conditioning.
When the result of determination of step S23 is YES, that is, in the case
where the vehicle compartment is to be cooled down, swinging of the
respective center and side louvers 43 and 46 are stopped. For example,
directions of the driver seat side and the passenger seat side center
louvers 43 and 46 as well as directions of the side louvers 43 and 46 on
the driver seat side and the passenger seat side are all fixed to
directions of passengers (for example, to vicinities of the necks or to
vicinities of shoulders of passengers in a vehicle) (step S24).
Thereafter, the operation finishes with the routine of FIG. 18.
Further, when a result of determination at step S23 is NO, the operation
determines swing ranges in accordance with air conditioning thermal load.
That is, the operation determines the swing ranges .theta.(Dr) and
.theta.(Pa) of the respective center and side louvers 43 and 46 centering
on reference positions of swinging (for example, vicinities of the necks
of passengers of a vehicle) based on solar radiation direction and solar
radiation intensity of the driver seat side air conditioning zone, solar
radiation direction and solar radiation intensity of the passenger seat
side air conditioning zone and a characteristic diagram of FIG. 19A (swing
range determining member).
Next, an inner temperature compensation of the swing ranges of the
respective center and side louvers 43 and 46 is carried out (inner
temperature compensation means). Further, a blown air amount compensation
of the swing ranges of the respective center and side louvers 43 and 46 is
carried out (blown air amount compensation means). Specifically, the swing
ranges .theta.(Dr) and .theta.(Pa) are calculated based on the swing
ranges .theta.(Dr) and .theta.(Pa) of the swing louvers 43 and 46, a
characteristic diagram of FIG. 19B, a characteristic diagram of FIG. 19C
and Equations 9 through 12 specified below.
.theta.(Dr)=.theta.(Dr)+.theta.1(Dr) (Equation 9)
.theta.(Pa)=.theta.(Pa)+.theta.1(Pa) (Equation 10)
.theta.(Dr)=.theta.(Dr)+.theta.2(Dr) (Equation 11)
.theta.(Pa)=.theta.(Pa)+.theta.2(Pa) (Equation 12)
Next, the operation determines the swing speeds of the respective center
and side louvers 43 and 46 such that the swing cycles are maintained
constant regardless of the swing ranges .theta.(Dr) and .theta.(Pa) (step
S26). That is, although the swing ranges can be calculated for respectives
of the center and the side louvers 43 and 46, the swing cycles are
equalized to each other regardless of swing ranges in order to ensure
excellent outlook and independent control performance. In this case, when
the air conditioning thermal load is large and the swing range is narrow,
the swing speed is retarded and when the air conditioning thermal load is
small and the swing range is wide, the swing speed is accelerated.
Further, the swing speed is preferably 10 seconds through 15 seconds.
In this case, when the swing speed is difficult to change, or when the
blown air amount to the rear seat side air conditioning zone is intended
to increase (when operation mode changeover switch 77 is set to "Rr"), in
the case where the respective center louvers 43 are directed to the rear
seat side, that is, when blow direction or blow position of air
conditioned blown air is deviated from passengers of a vehicle on the
front seat side, the swing cycle may be conformed to that of a contiguous
one of the center louver 43 by stopping swinging operation for a
predetermined period of time (step S27).
Next, timings of the respective center louvers 43 are adjusted regardless
of the magnitude of the air conditioning thermal load, that is, regardless
of the swing ranges .theta.(Dr) and .theta.(Pa) (step S28). Specifically,
even when start points of swinging motion of the driver seat side and the
passenger seat side center louvers 43 are deviated from each other, based
on an explanatory view of FIG. 20 and characteristic diagrams of FIGS. 21A
and 21B, a timing where the center louver 43 on the driver seat side is
directed to the passenger seat side and a timing where the center louver
43 on the passenger seat side is directed to the driver seat side, are
made to coincide with each other.
That is, as shown by FIGS. 21A and 21B, when in swinging the center louver
43 on one side (for example, driver seat side), swinging of the center
louver 43 on the other side (for example, passenger seat side) is started,
the center louver 43 which has been stopped start operation such that it
approaches a route on which it is to be moved originally (broken line in
FIG. 21B) and is swung thereafter in an original swing range at an
original swing speed. Further, the other one of the center louver 46 and
the side louvers 43 and 46 may be controlled similarly. In FIG. 21A, the
left 30 is the closest point to the adjacent air conditioning zone (Pa).
Accordingly, even when timings for staring operation of the center louver
43 on the driver seat side and the center louver 43 on the passenger seat
side are shifted from each other, in the case where a direction of blowing
air conditioned blown air blown from the driver seat side center FACE blow
outlet 21a mostly approaches a passenger of a vehicle on the passenger
seat side, a direction of blowing air conditioned blown air blown from the
passenger seat side center FACE blow outlet 21b mostly approaches a
passenger of the vehicle on the driver seat side. Therefore, an air
curtain is formed between the passenger of the vehicle on the driver seat
side and the passenger of the vehicle on the passenger seat side and
accordingly, independent temperature control performances of the driver
seat side air conditioning zone and the passenger seat side air
conditioning zone can be promoted. Further, timings where the center
louvers 43 on the driver seat side and the passenger seat side are
directed to central portions in the vehicle direction and timings where
they are directed to both sides in the vehicle direction become the same
and accordingly, appearance is improved.
Next, in order to prevent influence from being effected in a contiguous air
conditioning zone, a restriction region is set in the swing range of each
of the center louvers 43 (restriction region setting member). For this
purpose, when the swing range which is calculated in accordance with the
air conditioning thermal load cannot be maintained, the swing range of
each of the center louvers 43 is widened in a direction reverse to the
restriction region (blow condition controlling member). Further,
directions of widening the swinging operations of the respective center
and side louvers 43 are adjusted in directions of enhancing the blown air
amount to the rear seat side air conditioning zone (step S29).
That is, at an initial stage of cooling down operation, blow direction or
blow position of air conditioned blown air is frequently concentrated on
the front seats for safety driving. For example, as shown by FIG. 22A,
when the inner air temperature TR is 40.degree. C., the direction of the
center louver 43 on the driver seat side is fixed to direct to a vicinity
of the shoulder of the passenger of the vehicle on the driver seat side.
Further, as shown by FIG. 22B, when the inner air temperature TR to
lowered to 38.degree. C., the swing range of the passenger seat side is
enlarged such that the center louver 43 on the driver seat side is easy to
direct to the rear seat side air conditioning zone by which the air
conditioned blown air is blown to the rear seat side air conditioning zone
as early as possible, for example, at an early stage of cooling down
operation.
Further, as shown by FIGS. 22C and 22D, when the inner air temperature TR
is lowered from 35.degree. C. to 30.degree. C., in order to prevent
influence from being effected on the contiguous air conditioning zone
(passenger seat side air conditioning zone) and in order to supply
sufficiently air conditioned blown air to the front seat side air
conditioning zone, after widening the swing range to a vicinity of a
restriction location of the restriction region, the swing range of the
center louver 43 on the driver seat side is enlarged to a side of a side
window at this time.
Or, as shown by FIG. 23A, when the inner air temperature TR is lowered from
35.degree. C. to 30.degree. C., in the case where the swing range which
has been calculated in accordance with the air conditioning thermal load
cannot be maintained, without widening the swing range in a direction
reverse to the restriction region, the swinging operation of the
respective center louvers 43 may be stopped at a swing end (vicinity of
restriction location of restriction region) until elapse of a
predetermined time period of stoppage. It is preferable that the time
period for stoppage is substantially equal to a time period necessary for
exceeding the restriction location and returning again to the restriction
location if there were no restriction in movement to the contiguous air
conditioning zone. For example, when the inner air temperature TR is
35.degree. C. as in FIG. 23A, the time period for stoppage is 2 seconds
and when the inner air temperature TR is 30.degree. C. as in FIG. 23B, the
time period for stoppage is 8 seconds.
In this way, not only the agreeableness of passengers of a vehicle on the
rear seat side where they are liable to dissatisfy can be promoted but
also influence to a contiguous air conditioning zone can be reduced.
Further, as shown by FIGS. 24A, 24B and 24C, when the stoppage operation
of the predetermined time period for stoppage exceeds a predetermined time
period, the swing range may be widened in an inverse direction. Thereby,
both passengers of a vehicle on the front seat side and the passengers of
the vehicle on the rear seat side can be provided with an agreeable air
conditioning state.
Next, the swing range is adjusted in respect of solar radiation direction
(deviated solar radiation) based on a characteristic diagram of FIG. 25
(step S30). Thereafter, the operation finishes with the routine of FIG.
18.
Specifically, as shown by FIG. 26A, when the solar radiation direction is
directed to the front face or the right behind of passengers of a vehicle
on the front seat (Dr, Pa) side, the influence of solar radiation is
effected uniformly in left and right direction and accordingly, deviated
solar radiation correction is carried out uniformly in left and right
direction. Here, as shown by FIGS. 26A, 26B, 26C, 26D and 26E, when solar
radiation is deviated to either of left and right of passengers of a
vehicle on the driver seat side and the passenger seat side, the air
conditioning thermal load differs depending on the right half of the body
and the left half of the body of each of the passengers of the vehicle.
Accordingly, the swing ranges of the left and right louvers 43 and 46 for
the passengers of the vehicle are made to differ from each other. That is,
the swing ranges of the louvers 43 and 46 on the side where the solar
radiation is incident are narrowed and the swing ranges of the louvers 43
and 46 on the side where the solar radiation is not incident are widened
by which air conditioned blown air in accordance with solar radiation load
can be supplied to the passengers of the vehicle.
In this case, although according to the embodiment, the swinging operation
of the louver is stopped until elapse of a predetermined time period for
stoppage, a similar effect can be achieved also by swinging the louver
very slowly when the louver enters the restriction region.
Further, it is preferable that the above-described respective functions are
provided with selecting member capable of selecting execution and
prohibition in accordance with preference of passenger of a vehicle.
Further, when absence of passengers of a vehicle at the rear seat can be
detected at an initial stage of air conditioning, it is preferable to set
swing ranges such that swinging operation is carried out with preference
to swing ranges covering passengers of a vehicle on the front seat side.
Third Embodiment
FIG. 27 shows a third embodiment of the present invention and is a view
showing an air conditioner operation panel.
According to the third embodiment, the louver operation panels 76 are
respectively installed to the driver seat side and the passenger seat
side. Further, the louver operation panels 16 on the driver seat side and
the passenger seat side are respectively provided with center louver
switches 91 and side louver switches 92 such that the blow condition
changing devices of the driver seat side center FACE and the passenger
seat side center FACE blow outlets 21a and 21b and the blow condition
changing devices of the driver seat side side FACE and the passenger seat
side side FACE blow outlets 22a (not shown) and 22b can be controlled
independently from each other.
According to the embodiment, by setting the operation mode changeover
switch 77 to "U-DSWING" or "R-LSWING" installed at the louver operation
panel 76 on the driver seat side or the passenger seat side, the swing
louvers 43 and 46 can be swung in predetermined swing ranges. The swing
ranges may be modified in accordance with manual operation of passengers
of a vehicle, positions of seats, air conditioning thermal load, swing
time period or the like.
Fourth Embodiment
FIG. 28 and FIG. 29 show a fourth embodiment of the present invention.
According to the embodiment, the partition plate 14 in the air conditioning
duct 2 according to the second embodiment is abolished. Further, as a
front seat side FACE blow outlet, a wide flow FACE blow outlet 161 which
is opened on the most downstream side of air of a face duct 160 connected
to an air downstream side end portion of the air conditioning duct 2, is
installed. The wide flow FACE blow outlet 161 is constituted by driver
seat side and passenger seat side center FACE blow outlets 162 and 163
which are opened at center of the front FACE of the instrument panel 39,
driver seat side and passenger seat side side FACE blow outlets 164 and 65
on both sides of the instrument panel 39 in the vehicle width direction,
that is, at vicinities of side windows of the vehicle and driver seat side
and passenger seat side middle FACE blow outlets 166 and 167 which are
opened between these FACE blow outlets. Further, a plurality of louvers
for changing blow direction of air conditioned blown air by manual
operation of passengers of the vehicle are installed respectively at the
FACE blow outlets 162 through 167.
Further, the face duct 160 is pivotably installed with an FACE door 171 for
opening and closing the respective FACE blow outlets 162 through 167,
pivotably installed with a driver seat side middle FACE door 172 for
opening and closing the driver seat side side FACE and middle FACE blow
outlets 164 and 166 and pivotably installed with a passenger seat side
middle FACE door 173 for opening and closing the passenger seat side side
FACE and middle FACE blow outlets 165 and 167. Further, the driver seat
side and the passenger seat side middle FACE doors 172 and 173 correspond
to blow condition changing member according to the present invention and
change blow conditions (for example, wide blow mode and spot blow mode) of
air conditioned blown air blown from the driver seat side and the
passenger seat side FACE blow outlets 164 and 165 as well as the driver
seat side and the passenger seat side middle FACE blow outlets 166 and 167
to respective air conditioning areas in accordance with opening degrees.
In this embodiment, the FACE door 171 is moved to the opening side by an
actuator of a servo motor or the like and the driver seat side and the
passenger seat side middle face doors 172 and 173 are moved to the closing
side by actuators of servo motors or the like. Thereby, the driver seat
side and the passenger seat side center FACE blow outlets 162 and 163 as
well as the driver seat side and the passenger seat side side FACE blow
outlets 164 and 165 are opened and the driver seat side and the passenger
seat side middle FACE blow outlets 166 and 167 are closed by which an
opening area of the wide flow FACE blow outlet 161 is reduced whereby blow
range of air conditioned blown air blown from the wide flow FACE blow
outlet 161 is reduced and air conditioned blown air is locally blown to
portions of the bodies of passengers of a vehicle in air conditioning
areas (spot blow mode).
Further, the FACE door 171 is moved to the opening side and the driver seat
side and the passenger seat side middle FACE doors 172 and 173 are moved
to intermediary positions. Thereby, the driver seat side and the passenger
seat side center FACE blow outlets 162 and 163, the driver seat side and
the passenger seat side side FACE blow outlets 164 and 165 and the driver
seat side and the passenger seat side middle FACE blow outlets 166 and 167
are opened by which the opening area of the wide flow FACE blow outlet 161
is increased whereby air conditioned blown air is divergently blown into
the air conditioning areas by increasing blow range of air conditioned
blown air blown from the wide flow FACE blow outlet 161 (wide blow mode).
Further, further fine control of changing air distribution amount may be
carried out by adding FACE doors in the face duct 160 or air distribution
amounts for respective passengers of a vehicle in the driver seat side and
the passenger seat side air conditioning areas may be changed by putting
one or two partition plates in the air conditioning duct 2 and the face
duct 160, arranging blowers for respective air passages and
differentiating wind blow amounts of the respective blowers from each
other.
Fifth Embodiment
FIG. 30, FIGS. 31A and 31B show a fifth embodiment of the present
invention.
A blow condition changing device according to the embodiment is constituted
by a plurality of louvers 201, a louver motor 202, a link plate 203, link
levers 204 and so on. The louver 201 is rotatably installed while
centering on a rotating shaft 207 rotatably supported by an FACE grille
206 forming an FACE blow outlet 205 and is provided with a pin 208
projected upwardly as illustrated at an upper end portion of the rotating
shaft 207 on the opposite side.
The louver motor 202 is fixed with a gear 209 at an outer periphery of a
front end of an output shaft (not illustrated). The link plate 203 is
arranged at an upper portion of the FACE grille 206, provided with a rack
210 in mesh with the gear 209 of the louver motor 202 at one end portion
thereof and is installed slidably in forward and rearward direction of the
FACE grille 206 in accordance with rotation of the output shaft. Further,
the link plate 203 is formed with a plurality (same as number of louvers
201) of link grooves 211.
The link levers 204 are for transmitting movement of the link plate 203,
installed by a number the same as the number of the louvers 201 and formed
with pins 212 for fitting to the link grooves 211 of the link plate 203
and guide grooves 213 to which the pins 208 installed to the louvers 201
are fit.
According to the embodiment, when the link plate 203 is moved forwardly on
the FACE grille 206 by rotating the output shaft of the louver motor 202,
as shown by FIG. 31A, directions of the respective louvers 201 are driven
to positions directing to the passenger via the respective link levers
204. Thereby, air conditioned blown air is intensively blown from the
center FACE grille 206 and the side FACE grille 206 to the direction of
the passenger (concentrating mode).
Meanwhile, when the link plate 203 is moved rearwardly on the FACE grille
206 by reversely rotating the output shaft of the louver motor 202, as
shown by FIG. 31B, the direction of the respective louvers 201 are driven
to diverge to outer sides via the respective link levers 204. Thereby, air
conditioned blown air blown from the center FACE grille 206 and the side
FACE grille 206 is diverged respectively (diverging mode).
According to the blow condition changing device, air conditioned blown air
can be directed to the passenger of the vehicle intensively by selecting
the concentrating mode. Further, when the diverging mode of selected, not
only air conditioned blown air is blown widely into air conditioning zones
but the blown air amount of air conditioned blown air to the passenger of
the vehicle can be reduced.
Sixth Embodiment
FIG. 32 shows a sixth embodiment of the present invention.
A blow condition changing device of the embodiment is constituted by a case
221, a drum 222 pivotably integrated to the case 221, louvers 223 attached
to the drum 222 and so on. According to the blow condition changing
device, by pivoting the drum 222 in respect of the case 221, blow
direction of air conditioned blown air can be changed by changing
directions of the louvers 223 integrally with the drum 222.
Seventh Embodiment
FIGS. 33, 34A, 34B, 35, 36A, 36B, 36C, 36D, 37A, 37B and 37C show a seventh
embodiment according to the present invention.
A blow condition changing device according to the embodiment is provided
with a louver main body 301 installed in a slender cylindrical state and a
louver motor 302 for driving to rotate the louver main body 301. As shown
by FIG. 34B, the louver main body 301 is formed with an air passage 301
forming a shape of a circular arc having a constant width at a position
eccentric to the rotational center.
As shown by, for example, FIG. 35, the blow condition changing device can
be used by being attached to an air blow outlet 304 (refer to FIG. 34A) of
a vehicle 303 of a style of "one box car" or the like.
By driving to rotate the louver main body 301 by the louver motor 302, a
direction of blowing air conditioned blown air blown from the air blow
outlet 304 can be selected to an arbitrary direction in up and down
direction. For example at a position indicated by FIG. 36A, air
conditioned blown air can be blown mainly to the upper half of the body of
the passenger of a vehicle. Further, at a position indicated by FIG. 36B,
air conditioned blown air can be mainly blown to the lower half of the
body of the passenger of the vehicle. Further, at a position shown by FIG.
36C, air conditioned blown air can be blown to a direction of a ceiling of
a vehicle 303. Further, at a position shown by FIG. 36D, the air blow
outlet 304 can be closed.
Further, as shown by FIG. 37A, 37B and 37C, when the louver main body 301
is swung, air conditioned blown air blown from the air blow outlet 304 can
be blown in a predetermined swing range in accordance with the swing width
of the louver main body 301.
Eighth Embodiment
FIGS. 38, 39A, 39B, 39C, 40A, 40B, 40C, 41A, 41B, 41C, 41D and 41E show an
eighth embodiment of the present invention.
A blow condition changing device according to the embodiment can change
blow region of air conditioned blown air in the vehicle width direction
and is provided with a rotary valve 309 rotatably attached to a case 308
forming an FACE blow outlet 307. In the case 308, air conditioned blown
air is supplied from two of wind blowing ducts 310 connected to a rear
face thereof. The front face of the case 308 is attached with an FACE
grille 311 in a lattice shape.
The rotational position of the rotary valve 309 can be adjusted by
adjusting dials 312 attached to both ends thereof and a valve motor, not
illustrated, and as shown by, for example, FIGS. 39A, 39B and 39C and
FIGS. 40A, 40B and 40C, blow region of air conditioned blown air can be
changed in the vehicle width direction by changing an opening state of the
FACE blow outlet 307 in accordance with the rotational position of the
rotary valve 309. Further, a variety of blow conditions can be provided by
changing the shape of the rotary valve 309 as shown by FIGS. 41A, 41B,
41C, 41D and 41E. Also, the rotary valve 309 can also be used as the
louver main body 301 according to the seventh embodiment.
Ninth Embodiment
FIG. 42 shows a ninth embodiment according to the present invention.
According to automatic blower control of the embodiment based on a target
blow temperature TAO, a blower wind amount (blower control voltage applied
on the blower motor 9) is linearly set, for example, from 4 V to 13 V.
Further, according to control for determining swing ranges in this
embodiment, swing ranges of the swing louvers 43 and 46 at the respective
FACE blow outlets 21a, 21b, 22a and 22b are calculated based on the intake
port mode, the vehicle speed of a vehicle of an automobile or the like,
the blower control voltage VA and a characteristic diagram of FIG. 24.
In this case, as the intake port modes, there are at least an inner air
circulation mode and an outer air introducing mode, the inner air
circulation mode is an intake port mode for introducing inner air from the
inner air intake port 6 by closing the outer air intake port 7 by the
inner and outer switching door 3 and the outer air introducing mode is an
intake port mode for introducing outer air from the outer air intake port
7.
For example, when the blower control voltage is 8 V and the intake port
mode is the inner air circulation mode (case O in FIG. 42), the swing
ranges of the swing louvers 43 and 46 become 62.degree.. Further, when the
blower control voltage is 8 V, the intake port mode is the outer air
introducing mode and the vehicle speed of the vehicle is 40 km/h or lower
(case P in FIG. 42), the swing ranges of the swing louvers 43 and 46
become 47.degree.. Further, when the blower control voltage is 8 V, the
intake port mode is the outer air introducing mode and the vehicle speed
of the vehicle is higher than 40 km/h but lower than 80 km/h or less (case
Q in FIG. 42), the swing ranges of the swing louvers 43 and 46 become
76.degree.. Further, when the blower control voltage is 8 V, the intake
port mode is the outer air introducing mode and the vehicle speed of the
vehicle is 80 km/h or higher (case R in FIG. 42), the swing ranges of the
swing louvers 43 and 46 become 88.degree..
Therefore, according to the embodiment, the larger the blower wind amount,
the narrower the swing ranges of the swing louvers 43 and 46 and the
narrower the swing ranges, the more slowly the swing louvers 43 and 46 are
swung by which air conditioned blown air having a pertinent amount in
respect of all of air conditioning thermal load of blower wind amount,
solar radiation intensity, solar radiation direction, temperature
deviation between inner temperature and set temperature and so on, can be
supplied to passengers of the vehicle. Further, even when the swing ranges
of the swing louvers 43 and 46 are narrow, annoying feeling in respect of
movements of the swing louvers 43 and 46 and unpleasant feeling of
passengers of the vehicle can be resolved.
Tenth Embodiment
FIGS. 43, 44A, 44B, 44C, 44D, 44E and 45 show a tenth embodiment according
to the present invention in which FIG. 43 is a diagram showing a change in
a heat reception amount in respect of a change of the angle of the solar
radiation direction for each of left and right passengers at front seats
which is calculated by simulation by the inventors, FIGS. 44A, 44B, 44C,
44D and 44E are diagrams showing setting of swing ranges in respect of the
solar radiation direction (deviated solar radiation) and FIG. 45 is a
diagram showing swing ranges in respect of solar radiation direction at a
driver seat side center grille and a passenger seat side center grille. In
FIG. 43, the square represents the driver seat side, and the circle
represents the passenger seat side.
According to the graph of FIG. 43, it is known that the same solar
radiation amount, in comparison with the case where the sun is situated at
the front face of the vehicle, the further the sun is disposed to the side
face of the vehicle, that is, the further the deviated solar radiation,
the larger the heat reception amount of a passenger of the vehicle on the
side where the solar radiation is incident. In accordance therewith, as
shown by explanatory views of FIGS. 44A, 44B, 44C, 44D and 44E and a
characteristic diagram of FIG. 45, by changing swing ranges of object air
conditioning zones in accordance with the angle of the sun in left and
right direction, a difference in the heat receiving amounts caused by the
deviated solar radiation can accurately be canceled out and pleasant
feeling can be provided.
Further, as shown by the explanatory views of FIGS. 44A, 44B, 44C, 44D and
44E, by changing the swing ranges of the swing louvers 43 and 46 in
accordance with the deviated solar radiation and changing the portion of
the passenger of the vehicle to which air conditioned blown air is blown,
the portion of the passenger where the solar radiation is incident can be
cooled and pleasant feeling can be promoted. Further, FIGS. 44A, 44B, 44C,
44D and 44E and FIG. 45 show a case where a two swing louvers type having
blow condition changing devices (swing louvers 43, 46) of only the driver
seat side and the passenger seat side center grilles 41a and 41b or two of
the blow condition changing devices each of the driver seat side center
grille 41a or the passenger seat side center grille 41b are operated.
Eleventh Embodiment
FIG. 46 and FIG. 47 show an eleventh embodiment according to the present
invention.
According to the embodiment, stepping motors 43a and 46a are used as louver
driving member and the swing louvers 43 and 46 can be swung by outputting
pulse signals from the air conditioner ECU 50 to the stepping motors 43a
and 46a by operating a swing switch (not illustrated) by passengers of a
vehicle. Further, an amount of moving a louver can be calculated by
counting a number of pulses (number of ON) outputted from the air
conditioner ECU 50 and accordingly, in place of the potentiometers 59 and
60 according to the first embodiment, it can be utilized as louver
position detecting member. In this case, it is preferable that passengers
of a vehicle cannot operate the louvers other than via the swing switch.
According to a blow condition changing device of the embodiment, when the
swing louvers 43 and 46 are directly moved by manual operation of
passengers of a vehicle, absolute positions of the swing louvers 43 and 46
cannot be grasped by the air conditioner ECU 50, however, by carrying out
the swing louver control in accordance with the above-described method,
all of control of this embodiment is applicable.
Further, potentiometers may be installed to the swing louvers 43 and 46
using the stepping motors 43a and 46a or a manual operation switch for
manually operating directions of louvers may be provided and member for
transmitting extra pluses by an amount of manual operation (operation
amount) (including reverse direction) may be provided.
Twelfth Embodiment
FIG. 48 shows a twelfth embodiment according to the present invention.
Generally, when the intake port mode is the outer air introducing mode, the
faster the vehicle speed of the vehicle, the more increased is a blow wind
amount (blown air amount) of air conditioned blown air blown from the
respective FACE blow outlets and accordingly, passengers of a vehicle may
feel chilly by an increase in the cooled wind amount from the FACE blow
outlets to passengers of the vehicle.
Hence, as shown in FIG. 48, in the case of the outer air introducing mode,
the faster the vehicle speed, the wider the swing ranges of the swing
louvers 43 and 46 are set, and the slower the vehicle speed, the narrower
the swing ranges of the swing louvers 43 and 46 are set. Selectively,
corrected swing ranges may be calculated by multiplying the basic swing
range by a swing range compensation factor to determine the corrected
swing range. In this case, the faster the vehicle speed, the larger the
correction rates of the swing ranges of the swing louvers 43 and 46 are
set, and the slower the vehicle speed, the smaller the correction rates of
the swing ranges of the swing louvers 43 and 46 are set.
Thirteenth Embodiment
FIG. 49 shows a thirteenth embodiment according to the present invention.
According to the embodiment, the air conditioner ECU 50 is connected with
the post evaporator temperature sensor 57 for detecting temperature (post
evaporator temperature) of air immediately after passing through the
evaporator 10, or a blow temperature sensor (not illustrated) for
detecting blow temperature of air blown from an FACE blow outlet into
vehicle compartment. Further, when the air conditioning capacity is low by
deficiency of coolant in the refrigerating cycle or the like and the post
evaporator temperature or the blow temperature is high, the deficiency in
the air conditioning capacity may be compensated for by supplying a larger
amount of the cooled wind to the passenger of a vehicle by narrowly
setting the swing ranges of the swing louvers 43 and 46.
Further, the air conditioner ECU50 is connected with a seat temperature
sensor (not illustrated) for detecting seat temperature of front seats
(driver seat, passenger seat) or a steering wheel temperature sensor (not
illustrated) for detecting a steering wheel temperature. Further, when a
passenger of a vehicle gets in the vehicle parking in summer and air in
the vehicle compartment is conditioned, in the case where the seat
temperature or the steering wheel temperature is high, the passenger of
the vehicle feels hot all the more and becomes unpleasant. Hence, the
higher the seat temperature or the steering wheel temperature, the
narrower the swing ranges of the swing louvers 43 and 46 are set and the
larger amount the cooled wind is supplied to the passenger of the vehicle
by which disagreeable feeling of the passenger of the vehicle can be
resolved.
Fourteenth Embodiment
FIG. 50 shows a fourteenth embodiment according to the present invention.
According to the embodiment, the air conditioner ECU 50 is connected with a
skin temperature sensor (not illustrated) for detecting skin temperature
of a passenger of a vehicle, a humidity sensor (not illustrated) for
detecting the humidity in the vehicle compartment or the outer air
temperature sensor 55 for detecting outer air temperature. Further, when
the skin temperature is high, the passenger of the vehicle may highly
probably feel hot by exercise before getting in the vehicle and
accordingly, the swing ranges of the swing louvers 43 and 46 may be set
narrowly. Further, when the humidity in the vehicle compartment is high,
the passenger of the vehicle is liable to feel hot and accordingly, the
swing ranges of the swing louvers 43 and 46 may be set narrowly.
Furthermore, when the outer air temperature is high, thermal radiation
becomes large and the passenger of the vehicle feels hot and accordingly,
the swing ranges of the swing louvers 43 and 46 may be set narrowly.
Other Embodiments
Although according to the embodiments, the present invention is applied to
the vehicle air conditioning apparatus where temperature adjustments of
left and right sides in the vehicle compartment (driver seat side air
conditioning zone and passenger seat side air conditioning zone) can be
carried out independently from each other, the present invention may be
applied to a vehicle air conditioning apparatus where temperature
adjustments of the front side and the rear side in the vehicle compartment
(air conditioning zone on front seat side and air conditioning zone on
rear seat side) can be carried out independently from each other. Further,
the present invention may be applied to a vehicle air conditioning
apparatus where the temperature adjustment in the vehicle compartment is
carried out by a single temperature variable member.
Although according to the first embodiment, air conditioned blown air is
blown from the passenger seat side side FACE blow outlet 22a and the
passenger seat side side FACE blow outlet 22b only in the FACE mode or the
B/L mode, air conditioned blown air may be blown from the driver seat side
side FACE blow outlet 22a and the passenger seat side side FACE blow
outlet 22b even in the case of the FOOT mode, the F/D mode or the DEF
mode. That is, not only the cooled wind is supplied to passengers of a
vehicle when the air conditioning state is a cooling state but also warm
wind may be supplied to passengers of a vehicle from side FACE blow
outlets when air conditioning state is a warming state.
Although according to the first and the second embodiments the driver seat
side and the passenger seat side center grilles 41a and 41b as well as the
driver seat side and the passenger seat side side grilles 42a and 42b are
fixed to the instrument panel 39, the respective grilles may be attached
to storing members in a state where the respective grilles are supported
pivotably in left and right direction or respective grilles may be
attached to storing members in a state where the respective grilles are
supported pivotably in up and down direction. In this case, the main
bodies of the grilles may be used as blow condition changing member.
Although as the swing louvers, both of the swing louvers 43 pivotably
moving in left and right direction and the swing louvers 46 pivotably
moving in up and down direction are installed to the respective FACE blow
outlets, only either of the swing louvers 43 pivotably moving in left and
right direction and the swing louvers 46 pivotably moving in up and down
direction may be installed to the respective FACE blow outlets.
Although the swing ranges (swing range, swing angle) of the swing louvers
43 and 46 of the driver seat side center and side FACE blow outlets 21a
and 22a are equalized, they may be different from each other. Further, the
swing ranges of the swing louvers 43 and 46 of the passenger seat side
center and side FACE blow outlets 21b and 22b are equalized, they may be
different from each other.
Further, the swing speeds of the swing louvers 43 and 46 may be accelerated
by shortening stoppage time period at a swing end or a midway of the swing
range of each of the swing louvers 43 and 46 such that the wider the swing
ranges of the swing louvers 43 and 46, the shorter the stoppage time
periods. Conversely, the swing speeds of the swing louvers 43 and 46 may
be retarded by prolonging the stoppage time periods at a swing end or a
midway of the swing range of each of the swing louvers 43 and 46 such that
the narrower the swing ranges of the swing louvers 43 and 46, the longer
the stoppage time periods of the swing louvers 43 and 46.
Further, directions of starting to swing the swing louvers 43 and 46 on the
driver seat side and the passenger seat side may be directions where
directions of blowing air conditioned blown air become proximate to each
other and directions of starting to swing the swing louvers 43 and 46 on
the driver seat side and the passenger seat side may be set to directions
where directions of blowing air conditioned blown air become remote from
each other. Further, directions of starting to swing the swing louvers 43
and 46 of the driver seat side center FACE blow outlet 21a and the driver
seat side FACE blow outlet 22a may be set to directions where directions
of blowing air conditioned blown air become proximate to each other and
directions of starting to swing the swing louvers 43 and 46 on the center
and the side may be set to directions where directions of blowing air
conditioned blown air become remote from each other. The same goes with
the passenger seat side.
Although regardless of changes in swing ranges of the swing louvers 43 and
46, the swing cycles of the swing louvers 43 and 46 are set to constant
periods and the narrower the swing ranges of the swing louvers 43 and 46,
the slower the swing speeds of the swing louvers 43 and 46 are set, the
narrower the swing ranges of the swing louvers 43 and 46, the longer the
swing cycles of the swing louvers 43 and 46 may be set and the slower the
swing speeds of the swing louvers 43 and 46 may be set.
Although an explanation has been given of examples where the blow direction
variable member or the blow wind amount variable member for changing blow
direction or blown air amount of air conditioned blown air is used as blow
condition changing member for changing blow condition of air conditioned
blown air blown from blow outlets, as the blow condition changing member,
blow position variable member for changing blow position (blow height,
blow width) of air conditioned blown air may be used.
Further, when as solar radiation amount detecting member, the elevation of
the sun at time and day and solar radiation direction in respect of a
current position of a vehicle are stored to a microcomputer of a car
navigation system, an output signal from the car navigation system may be
read by the air conditioner ECU as a solar radiation sensor signal.
Although examples where the present invention is applied to the blow
condition changing devices on the front seat side of the vehicle, the
present invention may be applied to blow condition changing devices on an
intermediate seat side and a rear seat side of the vehicle.
Further, origin points of swinging of the blow condition changing member of
the swing louvers 43 and 46 or the like may be disposed on the side of the
side windows at vicinities of the blow condition changing member or may be
disposed on the side of the passengers of the vehicle.
It is preferable that setting operation can be carried out on a liquid
crystal element (display) of an air conditioner operation panel, the
setting operation can be carried out by special switching operation or the
setting operation can be carried out by a communication input from an
external device (for example, remote controller) such that correction or
change can be performed in accordance with seat position (position) of
passengers of a vehicle or preference of passengers of a vehicle.
Particularly, what is necessary for correcting in accordance with the seat
position of passengers of a vehicle or preference of passengers of a
vehicle resides in whether the blow condition changing member of the swing
louvers 43 and 46 or the like are directed to passengers of a vehicle when
inner air temperature is very high or to which directions the member are
directed or whether swing ranges of the blow condition changing member are
set widely or narrowly and so on.
Although the present invention has been described in connection with the
preferred embodiments thereof with reference to the accompanying drawings,
it is to be noted that various changes and modifications will be apparent
to those skilled in the art. Such changes and modifications are to be
understood as being included within the scope of the present invention as
defined in the appended claims.
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